Asplenium cardiophyllum (Hance) Baker

Family

Aspleniaceae

Nomenclature

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

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

NORTHEASTERN: Loei.

Wider Distribution

Southern China, southern Japan, Vietnam.

Ecology

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).

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