CONTRIBUTION TO THE CHOROLOGY OF GENUS LATHYRUS (FABACEAE) IN BULGARIA

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1 CONTRIBUTION TO THE CHOROLOGY OF GENUS LATHYRUS (FABACEAE) IN BULGARIA A. Tosheva 1, K. Pachedjieva 1 and B. Sidjimova 2 1 Sofia University St. Klmient Ohridski, Faculty of Biology, Department of Botany, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria; 2 Institute of Бotany, Bulgarian Academy of Sciences Correspondence to: Anita Tosheva atosheva@biofac.uni-sofia.bg ABSTRACT The data on the distribution in Bulgaria of the species from genus Lathyrus were summarized and revised. The collections from the main Bulgarian Herbariums SO, SOM and SOA were checked. New chorological data for 10 taxa were found: L. annuus, L. inconspicuus, L. pannonicus, L. sativus, L. setifolius, L. venetus, L. digitatus var. puberulus, L. latifolius var. brachypterus, L. sylvestris var. platyphуllos, L. venetus var. grandis. The taxon L. inconspicuus var. inconspicuus is reported as a new one for the Bulgarian flora. Keywords: chorology, Lathyrus, Bulgaria Baumg, L. pratensis L. and L. laxiflorus (Desf.) Kuntze). The other 5 sections are represented only by annual species: section Linearicarpus (L. inconspicuus L., L. sphaericus Retz.), section Orobastrum (L. setifolius L.), section Viciopsis (L. saxatilis (Vent.) Vis.), section Aphaca (L. aphaca L.) and section Nissolia (L. nissolia L.), Introduction The genus Lathyrus L. (Fabaceae) is a part of a tribe Vicieae (Adans.) DC and comprises about 150 species mainly distributed in Europe, Asia and North and South America and tropical East Africa (5). The interest in the species from genus Lathyrus is a result of their usage as a forage, honey, medicine and decorative plants. According to these valuable features some of the species are cultivated and others are important components of the pasture vegetation. In the Bulgarian flora the genus Lathyrus is represented by 30 species (8), related to 9 sections (6). The section Lathyrus is presented by 8 species 4 perennial (L. grandiflorus Sibth. et Sm., L. latifolius L., L. sylvestris L., L. tuberosus L.) and 4 annual (L. annuus L., L. cicera L., L. hirsutus L., L. sativus L.). The section Orobus is represented by 8 perennial species (L. alpestris (W. et K.) Kit., L. aureus (Stev.) Brandza, L. linifolius (Reich.) Bässler, L. niger (L.) Bernh, L. palustris L., L. transsilvanicus (Spreng.) Reichenb. fil., L. venetus (Mill.) Wohls., L. vernus (L.) Bernh.). The section Lathyrostylis comprises 5 perennial species (L. digitatus (M. Bieb.) Fiori, L. filiformis (Lam.) Gay, L. pallescens (M. Bieb.) K. Koch, L. pancicii (Jurišić) Adamović and L. pannonicus (Jacq.) Garcke). The section Pratensis is presented by 3 perennial species (L. hallersteinii 67 The species L. alpestris and L. pancicii are endemic for the Balkan Peninsula. Six species (L. alpestris, L. linifolius, L. palustris, L. transsilvanicus, L. pancicii and L. saxatilis) are under protection as threatened by the Biodiversity Act. In the main generalizing editions for the Bulgarian flora chorological data are pointed for the species of genus Lathyrus L. concerning mainly their distribution according to floristic regions and altitude (1, 3, 4, 7). In the course of the biosystematical survey of the species from genus Lathyrus distributed in Bulgaria, new chorological data were found for L. annuus, L. inconspicuous, L. pannonicus, L. sativus, L. setifolius, L. venetus, L. digitatus var. puberulus (Jordanov) Kožuharov, L. inconspicuus var. inconspicuous, L. latifolius var. brachypterus (Alef.) Kožuharov, L. sylvestris var. platyphуllos (Retz.) Asch., L. venetus var. grandis Velen. Materials and methods The information for the distribution of the studied species is based on the available literature data and specimens

2 deposited in the Herbaria of Sofia University (SO) and Institute of Botany at Bulgarian Academy of Sciences (SOM), the Herbarium at the Agricultural University, Plovdiv (SOA) and in personal collection. The localities is indicated on an UTM Grid map of Bulgaria (Scale 1: , 10 km square) (Fig. 1-6). This distribution is presented according to the floristic division of Bulgaria by Jordanov (2). The floristic elements follow Assyov and Petrova (1). Results and Discussion The available data on the distribution of the species were summarized and revised in the present research. The collections from main Bulgarian Herbariums SO, SOM and SOA were checked. In the course of the survey new chorological data for 10 taxa were found. The taxon L. inconspicuus var. inconspicuus is a new for the Bulgarian flora. SO-46766; SO-84086; SOM-94616; SOA-12002), Tracian plain (SOA-12001; SOA-12003; SOA-19412; SOA-26474) and (SO-46765; SOM ; SOA-6771; SOA-6739) up to 500 m a. s. l. (1, 3, 4, 7). Floristic element: Med-Cas. Fig. 1. Distribution of L. annuus - herbarium specimens ( ), new localities ( ). Lathyrus annuus (Fig. 1) A new species for the Sofia region (SOM ). regions Black sea cost (SOA-16233, SOA-36692, SOA , SOA-36694), North-eastern Bulgaria, Znepole region, Mt Sredna gora (from data in the literature), Balkan foothill region (SOM-49396), Rila Mts (SOM ), Rhodopes Mts (SO-47058, SO-47059, SO-84094, SOM , SOM , SOA-6742; SOA-26487, SOA-38440, SOA-38441, SOA-38442, SOA-39204, SOA-39275, SOA-39346, SOA , SOA-49721), Tracian plain (SOM , SOM , SOM , SOM , SOA-11964, SOA , SOA-32241, SOA-32242, SOA-32243, SOA-32244, SOA-36875, SOA-36876, SOA-36877, SOA-42688) and Tundja hilly region (SOM , SOA-11965, SOA-11966, SOA-11967, SOA-36871, SOA-36875) up to 800 m a. s. l. (1, 3, 4, 7). The distribution in the Struma valley mentioned by Kozuharov (3) and Terziiski (7) is confirmed (SOM ). Floristic element: Eur-As. Lathyrus inconspicuus (Fig. 2) A new species for the floristic regions: Sofia region, Northeastern Bulgaria (SOA-6775; SOA-12000), Sofia region (SO ), Struma valley (SOM ), Pirin Mts (SO ). regions Danube plain (SOA-6773), Stara Planina Mts (SO ; SOM ; SOA-6772), Znepole region (SO ; SO ), Rhodopes Mts (SO-46763; SO-46764; Acording to Kozuharov (3) the species is represented in Bulgaria with one variety var. stans Vis., plants with etendrillious leaves. In the course of the survey, some plants with single tendril were found in Znepole region (SO ) and Eastern Stara Planina Mts (SO-91435), which are referred as var inconspicuous. Fig. 2. Distribution of L. inconspicuus - herbarium specimens ( ), new localities ( ). Lathyrus pannonicus (Fig. 3) A new species for the Belasitza Mts (SOA-6792). regions Black sea cost, Stara Planina Mts, West Frontier Mts (from data in the literature), North-eastern Bulgaria (SO ; SO-46893; SO-93429), Danube plain (SOМ ), Balkan foothill region (SO-46899; SOМ-49502), Sofia region (SO-46895; SO-46896; SO-84083; SO-98385; SO YEARS OF ACADEMIC EDUCATION IN BIOLOGY SPECIAL EDITION/ONLINE

3 90308; SO ; SOМ-49496; SOМ-49498; SOМ-49500; SOМ-49504; SOМ-49505; SOA-6786; SOA-6788; SOA- 6790; SOA-6794; SOА-12087; SOА-12088), Znepole region (SO-46897; SO-96822; SOA-6791; SOA-16259), Vitosha Mts (SOM-49400; SOM ; SOA-6789; SOA-6793; SOA-13516; SOА-16258), Struma valley (SOМ ), Mt Sredna gora (SO-91047; SO ), Rhodopes Mts (SO ; SO-46888, 46821; SO-46820; SOМ-49475; SOМ , SOА-24773, 24774; SOА-45168), Tracian plain (SOМ , ; SOМ ; SOA-6787) and Tundja hilly region (SO-46891, 46892; SO-46894; SOA , 12081, 12082, 12083, 12080, 12084) up to 800 m a. s. l. (1, 3, 4, 7). Floristic element: smed-sib. A new species for the the floristic regions: Danube plain (SOA-? Pleven), Stara Planina Mts (SOM ), Slavianca Mts (SOM ) and Tundja hilly region (SOM ; SOA-6778). regions Black sea cost (SOM ), Balkan foothill region (SOM ), Sofia region (SOA-16255; SOA-24790), Znepole region (SOA-6777; SOA-16254), Struma valley Fig. 4. Distribution of L. sativus - herbarium specimens ( ), new localities ( ). (SOM ), Rhodopes Mts (SOM ; SOM ; SOA-38176; SOA-11900) and Tracian plain (SOM ) up to 800 m a.s.l. (1, 3, 4, 7). Floristic element: Pont-Med. Fig. 3. Distribution of L. pannonicus - herbarium specimens ( ), new localities ( ). Lathyrus sativus (Fig. 4) A new species for the Slavianca Mts (SOM ). regions Black sea cost (SO-47068; SO-93463; SOA-33144), Danube plain, Balkan foothill region, Mt Sredna gora, Struma valley, Mesta valley and Mesta valley Tundja hilly region (from data in the literature), Sofia region (SOM ; SOM-49630; SOM-49632; SOM-49633), Znepole region (SO-91223; SOM ; SOM ), Tracian plain (SO-47065; SO-47070; SO-47074; SOA-12112; SOA ; SOA-12114; SOA-19407; SOA-45847; SOA-45848; SOA-45849) up to 800 m a. s. l. (1, 3, 4, 7). The distribution Rhodopes Mts mentioned by Terziiski (7) is confirmed (SO ; SO-47066; SO-47069; SO-47071; SO-47072; SO ; SO-84081; SOA-6741; SOA-12109; SOA-12111; SOA-35260; SOA-41134; SOA-41135; SOA-41136; SOA ). Floristic element: submed. Lathyrus setifolius (Fig. 5) 69 Fig. 5. Distribution of L. setifolius - herbarium specimens ( ), new localities ( ). Lathyrus venetus (Fig. 6) A new species for the Slavianca Mts (SOА-43404). The species has been known so far from most of the floristic regions of Bulgaria: Black sea cost, North-eastern Bulgaria, Struma valley, Pirin Mts (from data in the literature), (SOA-36692, SOA-36693, SOA-36694, SOA ), Danube plain (SO-47006; SOА-18466), Balkan

4 foothill region (SO-90610; SOМ ), Stara Planina Mts (SO-47001, SO-47012; SO-84076; SOМ-49593, SOМ , ; SOМ ; SOА-6818, SOА-11931), Sofia region (SO-47004; SO ; SOА-6814; SOА ; SOМ-49592), Znepole region (SO-47007; SO ; SO ; SO ; SO ; SOА-6823), Vitosha Mts (SO-47005; SO-47009; SO ; SOМ ; SOА-6820; SOА-12136), West Frontier Mts (SO ), Belasitza Mts (SO ; SOМ ), Rila Mts (SOМ-96401), Mt Sredna gora (SO ; SOМ ), Rhodopes Mts (SO-47003, SO-47010, 47011; SOМ ; SOА-6818; SOА-12135; SOА-12137, 12138, 12139; SOА-24771, 24772), Tracian plain (SO-47002; SO , ; SO ; SOМ ; SOА-6820; SOА-12140, 12141, 12142; SOА-16268) and Tundja hilly region (SOА-6815) up to 1500 m a. s. l. (1, 3, 4, 7). Floristic element: Eur-Med. Lathyrus latifolius var. brachypterus A new taxon for the Balkan foothill region (SO-92478; SO ; SOМ ; SOМ ), Western Stara planina Mts (SO-46752); SOМ ), Vitosha Mts (SO ); SOМ , ). regions North-eastern Bulgaria (SO-46750; SO-46751; SOM ; SOА-40920) and Danube plain (SOА-18465) (3). Lathyrus sylvestris var. platyphуllos A new taxon for the North-eastern Bulgaria (SOM , ; SOА-12116, 12117), Western Stara Planina Mts (SOM-49619) and Sofia region (SO-47047, 47048; SO ). regions Black sea cost (SO-91818; SOM-96404; SOА-12119, 12122, 12123), Balkan foothill region (from data in the literature), Pirin Mts (SOM ), Rila Mts (SO-47045, 47046; SO ; SOА-6758) and Tracian plain (SOM ; SOM-49621; SOА-12118; SOА-12120, 12121) (3). Fig. 6. Distribution of L. venetus - herbarium specimens ( ), new localities ( ). Lathyrus digitatus var. puberulus A new taxon for the Black sea cost (SO-46817; SO ; SOМ ; SOА-6781; SOА-6783), Eastern Stara planina Mts (SOА-6780), Rhodopes Mts (SO-46815; SO ; SO-46889; SO ; SOМ-49499; SOМ ; SOМ ; SOМ ; SOА-16256; SOA-16260), Strandja Mts (SO-46816; SOМ ). regions Tracian plain (SO-58389; SO-91434; SOМ ; SOА-11994; SOА-24773, 24774) and Tundja hilly region (SO-46813; SO-46817; SO-46825; SO-84763; SOМ ; SOМ ; SOА-6779; SOА-6782; SOА-11990; SOА ; SOА-24800, 24801; SOА-40952; SOА-57611, 17612, 57613) (3). Lathyrus venetus var. grandis A new taxa for the Belasitza Mts (SO ), Pirin Mts (SO ) and Rila Mts (SOМ-96401). regions Black sea cost, Struma valley (from data in the literature), Stara Planina Mts (SO-47012; SO-84076; SOМ ; SOА-11931), Znepole region (SO ; SO ), Mt Sredna gora (SOМ ), Rhodopes Mts (SO-47010, 47011; SOА-12135), Tracian plain (SO , ; SO ; SOА-6820; SOА-12140; SOА-16268) and Tundja hilly region (SOА-6815) (3). The results of the present investigation will expend the available data for distribution of species from genus Lathyrus in Bulgaria and ensure the sustainable use of their resources like forage and medicinal plants. Acknowledgements. The financial support through Project YS-B-1605/2006 provided by the Ministry of Education and Science in Sofia is gratefully acknowledged. REFERENCES 1. Assyov B., Petrova A. (eds.) (2006) Conspectus of the Bulgarian Vascular Flora. Sofia, Jordanov D. (ed.) (1963) Flora NR Bulgaria. BAN, Sofia, 1, p YEARS OF ACADEMIC EDUCATION IN BIOLOGY SPECIAL EDITION/ONLINE

5 Kozuharov S. (1976) Lathyrus L. In: Flora NR Bulgaria (D. Jordanov, ed.). BAN, Sofia, 6, Kozuharov S. (1992) Fabaceae In: Guidebook to the higher Plants in Bulgaria (S. Kozuharov, ed.). Nauka i Izkustvo, Sofia, Kupicha F. (1981) Tribe Vicieae. In: Advances in Legume Systematics. Part I. (R. Polhill, R. Raven, eds.). Kew, Kupicha F. (1983) Notes Roy. Bot. Gard. Edinburgh, 41, Terziiski D. (2003) Lathyrus L. in: Key to to the Plants in Bulgaria. (D. Delipavlov, I. Češmedžiev, eds.). Agrarian Univ. Acad. Press, Plovdiv, Tosheva A. (2005) Fl. Medit., 15,