Asplenium cardiophyllum (Hance) Baker
Asplenium cardiophyllum (Hance) Baker, Ann. Bot. (Oxford) 5(19): 311. 1891; Boonkerd & Pollawatn, ScienceAsia 38: 125–128. 2012. – Micropodium cardiophyllum Hance, J. Bot. 21: 268. 1883. – Phyllitis cardiophylla (Hance) Ching, Icon. Filic. Sin. 1: t. 27. 1930. – Type: China, Hainan, B.C. Henry 22153.
Scolopendrium ikenoi Makino, Bot. Mag. (Tokyo) 13. 130. 1899. – Boniniella ikenoi (Makino) Hayata, J. Jap. Bot. 12(8): 541. 1936. – Type: Hahajima Isl., Ogasawara (Bonin) Islands, S. Ikeno s.n. (holotype , MAK).
Description from Boonkerd & Pollawatn, ScienceAsia 38: 125–128 (2012).
Rhizome short, creeping, 0.7–1.8 mm in diameter, covered with scales and hairs; scales ovate-lanceolate, 0.5–1.4 mm by 0.2–0.5 mm, dark brown, clathrate, entire; hairs simple, multiseptate. Stipe 10–20 cm long, 0.2–0.6 mm in diameter, deep castaneous and polished, sparsely covered with hairs. Lamina simple, monomorphic, ovate-lanceolate, 3.2–10 cm x 3–5.8 cm; apex acuminate, base deeply cordate, the two basal lobes usually overlapped, thinly covered with long narrow scales; margin entire or irregularly lobed; herbaceous to chartaceous; light green in living specimens, green-brown when dried; midrib indistinct on both surface, lateral veins 1–2 times forked, visible, forming a few areoles, without free veinlets, end of veinlets free, not reaching the margin. Sori linear, 0.2–2.2 cm long, on acroscopic side of lateral veins, 8–27 for each lamina; indusial membranaceous, almost entire, persistent .
Distribution in Thailand
Southern China, southern Japan, Vietnam.
In limestone rock crevices or on calcareous soil in semi shade areas at 420 m alt.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and possible threats are unknown. The one population known in Thailand is not in a protected area and the population is small so its status should be monitored.
Voucher specimens - Thailand
T. Boonkerd et al. 2011-304, Loei, Nong Hin (BCU).
Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 16 November 2016.