identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
FA48878873129432FF5D6F15CB15FBCD.text	FA48878873129432FF5D6F15CB15FBCD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Corydalis nanchuanensis S. R. Yi 2021	<div><p>Corydalis nanchuanensis S.R. Yi, sp. nov. (Figs. 1–4 A1–G1).</p> <p>Type:— CHINA. Chongqing: Nanchuan district, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.20389&amp;materialsCitation.latitude=29.056389" title="Search Plazi for locations around (long 107.20389/lat 29.056389)">Sanquan town</a>, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.20389&amp;materialsCitation.latitude=29.056389" title="Search Plazi for locations around (long 107.20389/lat 29.056389)">Dumatou</a>, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.20389&amp;materialsCitation.latitude=29.056389" title="Search Plazi for locations around (long 107.20389/lat 29.056389)">Jinfo Shan</a>, 29°03′23″N, 107°12′14″E, in rocky crevices, elev. 950 m, 16 March 2019, YSR 8126 (holotype KUN; isotypes KUN, PE).</p> <p>Diagnosis: — Corydalis nanchuanensis is morphologically similar to C. sheareri Moore (1875: 225), a species mainly distributed in south China and Vietnam in having tubers, divided lower bracts, conical corolla spurs, rounded stigmas, and larger elaiosomes (usually longer than seeds), but differs by having tapering-to-base (vs. uniformly sized) stems; entire (vs. usually crenate) leaf lobes, straight (vs. declined) pedicels in fruit, concave (vs. subacute) apices of outer petals, white (vs. usually purple) abaxial surface of inner petals, and reticulate (vs. tuberculate) seeds.A morphological comparison between C. nanchuanensis and C. sheareri in detail is given in Table 1.</p> <p>Description: —Perennial herb. Newly formed tubers of seedlings subglobose or subellipsoid, subsequent tubers forming on old tubers, ellipsoid, constricted in the middle, 0.5–1.9 × 1.0– 2.9 cm, pale yellow; fibrous roots filamentous, slender, 5–10 cm long. Stems 1 or 2, arising from the top of tubers, green with pale purple spots, prismatic, juicy. Basal leaf usually 1, often gradually withering during anthesis, petiole 6–20 cm long, leaf blade triangular-ovate, 10–15 × 10–30 cm, 2–4-pinnate; petioles of primary pinnules 3–5 cm long; petioles of the second pinnules shorter and the third pinnules subsessile; ultimate pinnules entire or divided, cuneate at base, sometimes slightly concave at apex; cauline leaves 1 or 2, similar to basal leaves but smaller. Racemes 5–15 cm long, 8–20-flowered; lower bracts broadly obovate, palmately lobed, 1.5–2.3 × 1.5–2.5 cm; upper bracts obovate to elliptic, 4.5–6.0 × 3.2–3.6 mm, short-mucronate at apex, cuneate at base. Pedicles 8–15 mm long; elongating to 1.5–3.0 cm long in fruit. Sepals scaly, irregularly lobed, ca. 2 × 1 mm. Flowers greenish white; outer petal limbs entire to slightly sinuous with purplish red tips, slightly concave, mucronate, crest ca. 1 mm high; upper petals 2.7–3.0 cm long; corolla spurs tapering to tip, straight or slightly curved downward, 1.4–1.7 cm long; nectary extended through ca. 1/3 of spur, obtuse at apex; lower petals spatulate, 1.4–1.8 cm long, with a spurlet at base (ca. 0.5 mm long); inner petals pandurate, 5–7 mm long, crests exceeding apices by ca. 1 mm; pistil 1.2–1.5 cm long, ovary linear, 0.9–1.2 cm long, 0.8–1.1 mm in diam.; style ca. 3 mm long, stigma rounded, with 12 papillae (two pairs of papillae of the base commissural respectively). Capsule narrowly oblong, slightly flat, 2.5–3.5 cm long. Seeds up to 50 in 2 rows, obliquely ovate, 1.0–1.3 × 0.7–0.8 mm, reticulate, black, lustrous, slightly concave in ventral surface; elaiosome larger, 1.5–2.0 × 1.0– 1.4 mm.</p> <p>Etymology: —The specific epithet of the new species refers to its type locality, i.e. Nanchuan district in Chongqing, China.</p> <p>Phenology: —Flowering March to April; fruiting April to May.</p> <p>Distribution and habitat: —The new species is currently known only from Nanchuan district in south-west Chongqing, China. It grows in rocky crevices at elevations between 900–1,600 m above sea level (Fig. 5).</p> <p>Common name (assigned here): —Nan Chuan Zi Jin (Chinese name: *川ĀƂ).</p> <p>Additional specimens examined (paratypes): — CHINA. Chongqing: Nanchuan district, Sanquan town, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.289444&amp;materialsCitation.latitude=29.053888" title="Search Plazi for locations around (long 107.289444/lat 29.053888)">Mazui</a>, 29°03′14″N, 107°17′22″E, in rocky crevices, elev. 1,150 m, 23 March 2018, YSR 8004 (KUN, PE); Chongqing: Nanchuan district, Sanquan town, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.1875&amp;materialsCitation.latitude=29.043612" title="Search Plazi for locations around (long 107.1875/lat 29.043612)">Huangcaoping</a>, 29°02′37″N, 107°11′15″E, in rocky crevices, elev. 1,370 m, 30 March 2018, YSR 8014 (KUN, PE); Chongqing: Nanchuan district, Sanquan town, Huangcaoping, on moist rocks, elev. 960m, 27 February 2020, YSR 8014 (KUN); Chongqing: Nanchuan district, Sanquan town, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.20389&amp;materialsCitation.latitude=29.074167" title="Search Plazi for locations around (long 107.20389/lat 29.074167)">Huilongsi</a>, 29°04′27″N, 107°12′14″E, in rocky crevices, elev. 1,170 m, 9 April 2020, YSR 842 3 (KUN); Chongqing: Nanchuan district, Sanquan town, <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.20389&amp;materialsCitation.latitude=29.074167" title="Search Plazi for locations around (long 107.20389/lat 29.074167)">Huilongsi</a>, 29°04′27″N, 107°12′14″E, in rocky crevices, elev. 1,170 m, 9 April 2020, YSR 8470 (KUN); Chongqing: Nanchuan district, Delong Town, on rocks, elev. 1,300 m, 16 April 1980, Z. Y. Liu 0144-01 (IMC), Z. Y. Liu 0144-02 (IMC), Z. Y. Liu 0144-03 (IMC), Z. Y. Liu 0144-04 (IMC), Z. Y. Liu 0144-05 (IMC); Chongqing: Nanchuan district, 13 April 1982, S. X. Tan, Z. L. Li &amp; J. L. Zhang 3084 (IMC); Chongqing: Nanchuan district, Sanquan Town, Jinfo Mountain, roadside, elev. 1,600 m, 12 March 1999, Z. Y. Liu 973488-01 (IMC), Z. Y. Liu 973488-02 (IMC), Z. Y. Liu 973488-03 (IMC), Z. Y. Liu 973480 (IMC).</p> <p>Notes:—Specimens of this new species were first collected by Zheng-Yu Liu in 1980 and deposited at IMC. They were identified as “ Corydalis nanchuanensis Z.Y. Liu ” by Zheng-Yu Liu and Bai-Quan Shi on the determination slips. Specimens of the new species were later collected also by other collectors.</p> <p>Corydalis nanchuanensis may belong to Corydalis sect. Asterostigma Wu &amp; Chuang (1999: 103) by having rounded stigmas and narrowly oblong capsules. However, its tapering-to-base stems and tubers with the new ones formed directly on old ones correspond to the characters of C. sect. Duplotuber Ryberg (1960: 223). Further studies are needed to confirm the sectional placement of this species.</p> </div>	http://treatment.plazi.org/id/FA48878873129432FF5D6F15CB15FBCD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Zhang, Bu-Yun;Xiao, Jin-Fei;Yi, Si-Rong	Zhang, Bu-Yun, Xiao, Jin-Fei, Yi, Si-Rong (2021): Corydalis nanchuanensis (Papaveraceae), a new species from Chongqing, China. Phytotaxa 510 (2): 163-170, DOI: 10.11646/phytotaxa.510.2.5, URL: http://dx.doi.org/10.11646/phytotaxa.510.2.5
