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Three New Species of Corydalis (Fumariaceae)



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Three New Species of Corydalis Fumariaceae from Northwestern Sichuan China Xin Fen Gao Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 Sichuan People s Republic of China xfgao cib ac cn Yu Lan Peng Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 Sichuan People s Republic of China and Graduate University of the Chinese Academy of Sciences Beijing 100049 People s Republic of China Magnus Lide n Botaniska tra dga rden Uppsala Universitet Villava gen 8 75236 Uppsala Sweden Ying Wei Wang Beijing Institute of Botany Chinese Academy of Sciences Beijing 100093 People s Republic of China ABSTRACT The Jiuding Ridge Sichuan China has been explored during the past several years by a team from Chengdu Institute of Biology Chinese Academy of Sciences and three undescribed species of Corydalis DC Fumariaceae have been revealed and are apparently endemic to this mountain The new species were observed in forest C capitata X F Gao Lide n Y W Wang alpine scree C aeaeae X F Gao Lide n Y W Wang and alpine rocky limestone areas C schistostigma X F Gao Lide n Y W Wang Y L Peng The two first species have their closest relatives in the Wolong Balangshan District Wenchuan Sichuan Corydalis aeaeae differs from C panda Lide n Y W Wang in its small size few flowered racemes and broadly obtuse outer petals with low short crests Corydalis capitata differs from the C flexuosa Franchet complex in the capitate racemes small flowers with deeply serrate petals and the peculiar thin strictly erect lateral branches Corydalis schistostigma is unique in the C curviflora Maximowicz ex Hemsley group in the deeply cleft stigma and very forwardprojecting crests to the inner petals and possibly has its affinities more to the north and northwest in the Hengduan Mountains Key words China Corydalis Fumariaceae IUCN Red List Sichuan Chaping Mountain with an elevation of 4990 m at Jiuding peak is located in northwestern Sichuan China It is the nearest mountain above 4000 m close NOVON 18 330 335 PUBLISHED ON to the Chengdu Plain There are five natural reserves for protecting pandas and other wild animals in this mountain region Because the main road runs along the Min River valley on the western side of the mountain and no roads reach the higher elevations this area was neglected by botanists until 2002 During the past several years Xin Fen Gao and YuLan Peng have explored the flora of this beautiful mountain Among the botanical novelties are three new species of Corydalis DC Fumariaceae which are described below Magnus Lide n and Shengxiang Yu studied the species in the field in 2006 and one example has also been studied in cultivation 1 Corydalis aeaeae X F Gao Lide n Y W Wang Y L Peng sp nov TYPE China Sichuan Maoxian Shiguxiang alpine meadow 3700 m flowers pale blue 20 July 2002 Xin Fen Gao Yu Lan Peng Wei Guo Tu 2517 holotype CDBI isotype CDBI Figure 1 Herba perennis glabra vel raro superne minutissime papillosa rhizoma tenue breve verticale bulbo apicali tenui ovato caules ramosi 2 ad 4 foliati ascendentes ad basin debiles folia radicalia 2 ad 4 ternata foliolis profunde divisis lobis parvis obovatis brevissime mucronatis folia caulina radicalibus similia sed minora petiolis brevioribus Racemi breves 3 ad 7 flori in statu frugifero non vel parce elongati bracteae inferiores 1 ad 2 ad 3 ternatae pedicellos subaequantes lobis acutis superiores minores parce divisae vel integrae pedicelli erecti 7 10 mm longi Sepala 1 2 mm longa corolla azurea petalum supernum late 2 SEPTEMBER 2008 doi 10 3417 2007045 Volume 18 Number 3 2008 Gao et al Corydalis Fumariaceae from China 331 Figure 1 Corydalis aeaeae X F Gao Lide n Y W Wang A Habit B Flower C Stigma D Lower petal Drawn by Jian Gu from the type specimen Gao et al 2517 CDBI obtusum brevissime et angustissime cristatum crista apicem petali non attingenti calcari leviter curvato petalum infernum late obtusum basi marsupiatum stigma divaricatum 8 papillatum Capsula ex pedicello stricto pendula anguste fusiformis venis papillosis Herbs perennial glabrous rhizome thin short vertical with fleshy scales and a few remains of broad fleshy leaf bases crowned by a leaf rosette from a narrowly ovate bulb and emitting several long thin slightly fleshy pale roots basal portion usually buried below scree or soil surface stems few to several thin ascending 5 16 cm simple or often branched with 2 or 3 to 4 leaves often suffused with brownish purple especially the stems and undersides and apices of leaf lobes Petioles of rosette leaves 2 10 cm lamina 1 4 3 1 3 cm 2 to 4 ternate with deeply lobed leaflets the ultimate lobes narrowly obovate shortly mucronate 2 4 mm primary leaflets long stalked secondary ones shorter lamina often densely and finely papillose abaxially especially along veins Racemes short 3 to 7 flowered not or scarcely elongating in fruit lower bracts 1 2 to 3 ternate the upper ones smaller less divided to entire with acute lobes pedicels thin 7 10 mm erect in fruit smooth or finely papillose Flowers pale to clear azure blue sepals and veins sometimes with a purplish suffusion the inner petals pale but with the dorsal crests apically deeper blue though usually white at the extreme apex the purple blotch on the inner side of the inner petals tends to show through especially in 332 Novon herbarium specimens sepals broadly triangular and deeply dentate to lanceolate and almost entire 1 2 mm outer petals with broad obtuse limbs ecristate or usually with a shorter and narrower crest that does not reach the apex upper petal with a slightly subsigmoidal curved 9 10 mm spur into which a nectary protrudes ca halfway or slightly more inner petals 9 10 mm the lower petal with a pouch or spurlet at the very base abruptly widening into a 7mm wide rounded limb ovary with 12 to 16 ovules stigma divaricate with 8 papillae Capsule pendent from erect pedicels narrowly fusiform ca 10 mm with 3 mm style densely papillose along the veins ca 5 to 12 seeded obtuso triangularia biternata foliolis profunde divisis lobis oblongis obtusis folia caulina radicalibus similia breviter petiolata vel subsessilia Racemi terminales densissime multiflori in statu fructifero elongati racemi axillares pauciflori bracteae petiolatae anguste obovatae lobis parvis paucis lateralibus praeditae praeter bracteae infimae folia suprema simulantes pedicelli erecti tenues 7 12 mm longi in fructu ad 20 30 mm elongati Sepala albida ca 2 5 3 2 mm ovata circumdentata corolla purpurea


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