Selliguea lateritia (Baker) Hovenkamp

Family

Polypodiaceae

Nomenclature

Selliguea lateritia (Baker) Hovenkamp, Blumea 43: 71. 1998; Hovenkamp, Fl. Males., Ser. II, Ferns and Fern Allies 3: 212. 1998. – Polypodium lateritium Baker, Ann. Bot. (London) 5: 93. 1891. – Selliguea metteniana var. lateritium (Baker) Tardieu & C.Chr., Notul. Syst. 8: 197. 1939; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 490. 1941. – Type: Godefroy-Lebeuf 862 (K), Cambodia.

Description

Description from Hovenkamp, Fl. Males., Ser. II, Ferns and Fern Allies 3: 212. 1998.
Rhizome 1–3 mm thick, internodes to 0.5–1 cm long; vascular strands with bundle sheath hyaline; sclerenchyma strands many to very many. Rhizome scales rarely pseudopeltate, usually peltate, spreading or squarrose, 5.5–12 by 0.4–1 mm (width at base), from the wide base abruptly contracted to a narrow, subulate, brown acumen, at base with a lighter, irregularly lacerate/dentate margin; acumen entire. Fronds simple, dimorphic. Fertile fronds with stipe 3.2–25.5 cm long; lamina 5.7–21.5 by 0.7–5.1 cm, index 3–15, widest at 0.2–0.4 from base (sometimes linear). Sterile fronds with stipe 2–15.5 cm long; lamina 4.5–14 by 1–7 cm, index 1.5–6, widest at 0.2–0.6 from base. Venation: main veins on upper surface raised, distinct. Hydathodes absent. Margin cartilaginous, thickened, without notches. Sori elongate or confluent across connecting veins to transverse coenosori, in one row between adjacent main veins, in 2–5, sometimes more, rows between costa and margin, 1–4 mm wide, slightly to deeply sunken (upper surface never strongly pustulose).

Distribution in Thailand

PENINSULAR: Narathiwat.

Distribution in Cambodia

Kampot.

Wider Distribution

Cambodia, S Vietnam, throughout Malesia.

Ecology

Terrestrial, epiphytic or lithophytic in wide variety of forest types.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread outside of Thailand and not under any known threat.

Voucher specimens - Cambodia

Viboth R51-17 (P).

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