New Coniogramme bashanensis a Fern Species (Pteridaceae), from Shaanxi, China Guo and Chen Xiao-si Jian-ping A&F College of Life Sciences, Northwest University, Yangling, Shaanxi 712100, China. [email protected]; [email protected] A cm Abstract. new species, Coniogramme bashanen- Herbs perennial, 60-90 stems basally tall; & Guo 40- sis X. S. B. Li (Pteridaceae), is described and decumbent; scales dark brown, lanceolate; stipes mm new illustrated. This fern species was collected from 60 cm, ca. 5 diam., gray-brown or stramineous; Bashan Langao County the northern slope of Mt. in of base with sparse, brown, linear-lanceolate scales; X Shaanxi Province, China. It is similar to C. wilsonu lamina 30-40 ca. 25 cm, broadly ovate, bipinnate; and Hieron. in its perennial habit frond veins that are lateral pinnae in 4 to 5 pairs, opposite, oblique and X 1- or 2-forked, occasionally connected to form one or 15-20 10 slightly incurved, basal pair largest, ca. fem two areoles. These taxa differ by the shape of the cm, petioles 3-4 cm, pinnate; lateral pinnules in 1 to X frond base. Pinnules are asymmetrically cuneate or 10-15 2.5-4 cm, oblong 3 pairs, to lanceolate, hastate, or divided with a small auriculate segment in apex acuminate and caudate, base rounded to bashanensis; pinnules are cordate or rounded C. to cuneate or hastate, shortly stalked or sessile; medial X 15-18 3-4 pinnae simple, oblong or lanceolate, Key Coniogramme, IUCN Red words: China, 2-20 mm, cm, petiolules otherwise similar to lateral Mt. Bashan, Pteridaceae, Shaanxi. List, pinnules, hastate or divided with a small auricular segment base, unequal; terminal pinnules larger at The genus Coniogramme Fee (Pteridaceae) con- than adjacent pinnules, petiolules 1.8 cm, oblong to 50 mainly sists of ca. species, distributed in tropical lanceolate, apex acuminate and caudate, base and subtropical regions of Asia, few of which are rounded cuneate, unequal; fronds herbaceous & to (Wu distributed in Africa and South America when dry, adaxially dark green, abaxially gray-green, About 39 Coniogramme Ching, 1991). species of were documented from China in the Flora Reipu- serrulate with minute, slightly irregular, deltate teeth; blicae Popularis Sinicae (Shing, 1990), mainly in the 1- or 2-forked, occasionally connected to form 1 or 2 areoles; the veinlets end in hydathodes; ern China. Recently, in the course of exploration in hydathodes thickened, reaching slightly linear, to the Bashan Mountains, several specimens of Con- base of teeth. Sori continuous along pinnule veins, iogramme were collected. However, these specimens mm extending 6 from the pinna margin. to a small auricular segment the pinnule base, which at and Coniogramme Distribution habitat. basha- known only from Langao County in Shaanxi species. After careful examination of other morpho- Province, China. Langao County located in the is we new logical characters, determine this to be a middle of the northern slope of Mt. Bashan. The new species of Coniogramme, which described herein. is species occurs in secondary forest, as well as along & Coniogramme Guo bashanensis X. S. B. Li, sp. nov. TYPE: China. Shaanxi: Langao, Yihe town, locality deciduous broad-leaved forest or mixed is Shiziwan 32°16'27"N, 109°4'13"E, temperate coniferous and broad-leaved and the village, forest, 1250 m, 15 Oct. 2004, Y.-s. Chen, Z.-h. Wu, dominant species are Quercus aliena Blume var. & WUK; B. Li X.-s. Guo 1965 (holotype, isotype, acutiserrata Maxim, ex Wenz., Pinus tabuliformis WUK). Figures 1-3. IUCN Red Coniogramme & List category. basha- Coniogramme Guo Diagnosis. bashanensis X. S. B. known nensis only from one population with mature is individuals fewer than 150. distributional area Its is hastate base or the base divided with a small auricular km 100 2 The known smaller than only population of . C. bashanensis severely threatened by developing is the latter has lanceolate pinnules somewhat cordate or and rounded-cuneate and glabrous on both surfaces. tourism overgrazing in the area. Its conservation May Novon 22: 292-296. Published on 24 2013. 10.3417/2009145 doi: 294 Novon new r forked once or twice, or rarely species differs from the latter by its pinnules free veinlets. The oblong to lanceolate, the base unequal, rounded to , veinlets end in hydathodes and are hastate or divided with a small auricular that are continuously distributed along the veins. segment, and sparsely short hairs on both lamina Coniogramme bashanensis is very distinct from other surfaces. As for C. wilsonii, its pinnules are known species of Coniogramme in China and can lanceolate, also with an unequal base, somewhat easily be recognized by having four to five pairs of cordate or rounded to cuneate, and both lamina Coniogramme Coniogramme was lateral pinnae. bashanensis other- surfaces are glabrous. intermedia is wise similar to C. wilsonii in general morphology. also found near the distributional area of C. Both species have 1- or 2-forked veins, forming a few bashanensis, but the latter species has pinnules with discontinuous areoles along each side of costae. The a rounded to cuneate base and veins that do not form Novon United Kingdom. Coniogramme 228-274 Shing, K.-H. 1990. Fee. Pp. in R.- & C. Ching K.-H. Shing (editors), Flora Reipublicae