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| Format: | Recurso digital |
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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.18414939 |
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Table of Contents:
- <p><b><i>Pinellia calcicola</i> Z.X. Ma & Yi F. Li, <i>sp. nov.</i> (Figs. 1–5)</b></p><p><i>Pinellia calcicola is superficially similar to P. cordata N.E.Brown in Forbes & Hemsley (1903: 173), but differs in having broadly sagittate leaf blades without bulbil at the sinus, a sub-boat-shaped spathe limb, never becoming orbicular but flattened during anthesis; P. calcicola is also reminiscent of P. polyphylla Hu (1984: 713) but differs in having an epigeal, superimposed bulbil developed at the apex of the petiolar sheath, and medium-sized broadly sagittate leaf blades, 9–17 × 8–15 cm (vs. deltoid-ovate or broadly ovate, 6–33 × 4–22 cm) with abruptly mucronate posterior lobes.</i></p><p><b>Type:</b> — CHINA. Guangxi Autonomous Region: Guilin City [<b>ũṳffi</b>], Yanshan District [<b>DZƜ区</b>], NE of Dongkai [<b>东开</b>], Guilin Karst World Natural Heritage, trail through the boundary marker (buffer zone) No. 235, elev. 177 m, 25.1188975N, 100.395667E, in dry and half-shaded limestone crevices at hill top, in will drained substrate, 16 April 2025, <i>Y.E. Wang 2173</i> (holotype BAZI [barcode: 000851]!, isotype BAZI [barcode: 000852]!, HITBC, to be distributed).</p><p>Perennial karst-obligate lithophytic herb. Subterrean stem a subglobose tuber, to ca. 3 cm in diam., often surrounded by short ovoid tubercles at apex, covered by dark brownish marcescent fibers broken down from petioles. Cataphylls not seen. Leaves 2–4 together; petiole light green, terete, 28–35 cm long; petiolar sheath measures ca. 1/6 the length of the entire petiole, developing a dark brown, epigeal and superimposed tubercle at the apex when mature; leaf blade medium green, membranous, broad sagittate; anterior lobe deltoid-triangular, 6.0–9.5 × 4.3–7.6 cm, apex acuminate and shortly mucronate at apex; posterior lobes triangular, 3.5–8.0 × 1.8–3.4 cm, long somewhat constricted at base, acuminate and mucronate at the apex, sometimes rounded in neotenic leaves; bulbil absent from leaf sinus. Inflorescence solitary, above the leaf blade, 34–38 cm tall; peduncle longer than the petioles, to 34 cm long. Spathe green; spathe tube narrowly cylindrical, 2.6–2.8 cm long, 0.6–0.7 cm in diam., with a constriction near the base, part below constriction ca. 1/6 of the entire spathe length; spathe mouth truncated oblique; spathe limb erect, slightly recurving, boat-shaped and flattening during anthesis. Spadix monoecious; female zone 0.6–0.8 cm long, consisting of 26–32 pistils, fully adnate to spathe; female flowers densely arranged; pistil ovoid; sterile interstice naked, ca. 0.3 cm long, coincide with the transverse septum at the spathe constriction; male zone yellowish, cylindrical, 0.3–0.4 cm long; anthers sessile, connective slender, thecae ellipsoid, 2-celled, dehiscing by apical slit; appendix erect, 17–20 cm long, slender, sessile at base. Infructescence erect, lower spathe persistent, unilaterally attached; berries ovoid, singleseeded. Fl. Mar–Apr.</p><p><b>Distribution and ecology:</b> — <i>Pinellia calcicola</i> is a rare herbaceous species currently known only from a few localities in the Lijiang River [<b>NJū</b>] region in the vicinity of the city of Guilin, where it shows an obvious association with karst landforms. Field observations indicate this species is a karst obligate, growing exclusively in semi-shaded, persistently moist limestone crevices on undisturbed hill summits dominated by sclerophyllous and broad-leaved shrubs at elevations of 150– 230 m.</p><p><b>Additional specimens examined (paratypes):</b> — CHINA. Guangxi Autonomous Region: Guilin City, Gongcheng County [<b>üĸ县</b>], Jiahui Township [<b>嘉会乡</b>], Baiyan Village [<b>ǝāñ</b>], elev. 230 m, 25°00'13.80''N, 110°54′08.36''E, in bushes, calcareous soil, 1 April 2015, <i>Gongcheng County Survey 450332150401022LY</i> (IBK [barcode: IBK00377774]!); Yanshan District [<b>DZƜ区</b>], Qifeng Town [<b>奇ēDz</b>], Maoyuan Reservoir [<b>Í原AE÷</b>], elev. 149 m, 25°11'52''N, 110°21'17''E, 28 March 2019, <i>Yanshan Distruct Survey 450311190328017LY</i> (QXMG [barcode: GXMG0235628]!).</p>