Ferns of Thailand, Laos and Cambodia

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Family

Polypodiaceae

Nomenclature

Aglaomorpha heraclea (Kunze) Copel. Univ. Calif. Publ. Bot. 16: 117. 1929; Holttum, Rev. Fl. Malaya ed. 1, 2: 185. 1955 [‘1954’]; Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 17. 1998; Boonkerd & Pollawatn, Pterid. Thailand: 262. 2000. – Polypodium heracleum Kunze, Bot. Zeitung (Berlin) 6: 117. 1848. – Drynaria heraclea (Kunze) T.Moore, Index Fil. II, 346. 1862. – Pleopeltis heraclea (Kunze) Alderw., Bull. Dép. Agric. Indes Néerl. 27: 11. 1909. – Drynariopsis heraclea (Kunze) Ching, Sunyatsenia 5: 262. 1940. – Type: Zollinger 977 (B), Java.

Description

Description from Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 17. 1998.
Epiphytic, sometimes lithophytic. Rhizome 2–3 cm thick or more, short creeping, phyllopodia up to 10 cm distant, not elevated; dilated frond bases imbricated, rachises not persistent. Anatomy: vascular bundles many, equally sized, arranged in 1 or 2 rows with conspicuous invaginations sometimes forming an enclosed circle, with or without dark bundle sheaths. Rhizome scales spreading, pseudopeltate, 7–40 by (0.6–)1–2.5 mm, index 6–25(–35), basal auricles short, apex long-filiform, dentate to strongly dentate, ill-defined midrib present. Fronds monomorphic, sessile, the dilated base lobed, upwards pinnatifid, (60–)100–200(–350) by 20–65(–100) cm, index 3–7, glabrous or with very short hairs scattered over the lamina, apical pinnae present. Pinnae without basal constriction, 15–65 by 3–14 cm, index 4–8, margin entire, apex acute to acuminate. Sori usually present on all pinnae, in many rows between midrib and margin, many in each main areole, in two irregular rows parallel to the connecting veins, round, up to 2 mm wide, slightly sunken (often distinctly pustulate on the upper surface). Sporangia glabrous . Spores with small globules.

Distribution in Thailand

PENINSULAR: Yala.

Wider Distribution

Throughout Malesia to the Solomon Islands.

Ecology

Epiphytic, sometimes lithophytic , in evergreen forest.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is common and widespread in other parts of its range.

	Ferns of Thailand, Laos and Cambodia
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Aglaomorpha heraclea (Kunze) Copel Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17 Family Polypodiaceae Nomenclature Aglaomorpha heraclea (Kunze) Copel. Univ. Calif. Publ. Bot. 16: 117. 1929; Holttum, Rev. Fl. Malaya ed. 1, 2: 185. 1955 [‘1954’]; Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 17. 1998; Boonkerd & Pollawatn, Pterid. Thailand: 262. 2000. – Polypodium heracleum Kunze, Bot. Zeitung (Berlin) 6: 117. 1848. – Drynaria heraclea (Kunze) T.Moore, Index Fil. II, 346. 1862. – Pleopeltis heraclea (Kunze) Alderw., Bull. Dép. Agric. Indes Néerl. 27: 11. 1909. – Drynariopsis heraclea (Kunze) Ching, Sunyatsenia 5: 262. 1940. – Type: Zollinger 977 (B), Java. Description Description from Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 17. 1998. Epiphytic, sometimes lithophytic. Rhizome 2–3 cm thick or more, short creeping, phyllopodia up to 10 cm distant, not elevated; dilated frond bases imbricated, rachises not persistent. Anatomy: vascular bundles many, equally sized, arranged in 1 or 2 rows with conspicuous invaginations sometimes forming an enclosed circle, with or without dark bundle sheaths. Rhizome scales spreading, pseudopeltate, 7–40 by (0.6–)1–2.5 mm, index 6–25(–35), basal auricles short, apex long-filiform, dentate to strongly dentate, ill-defined midrib present. Fronds monomorphic, sessile, the dilated base lobed, upwards pinnatifid, (60–)100–200(–350) by 20–65(–100) cm, index 3–7, glabrous or with very short hairs scattered over the lamina, apical pinnae present. Pinnae without basal constriction, 15–65 by 3–14 cm, index 4–8, margin entire, apex acute to acuminate. Sori usually present on all pinnae, in many rows between midrib and margin, many in each main areole, in two irregular rows parallel to the connecting veins, round, up to 2 mm wide, slightly sunken (often distinctly pustulate on the upper surface). Sporangia glabrous . Spores with small globules. Distribution in Thailand PENINSULAR: Yala. Wider Distribution Throughout Malesia to the Solomon Islands. Ecology Epiphytic, sometimes lithophytic , in evergreen forest. Proposed IUCN Conservation Assessment Least Concern (LC). This species is common and widespread in other parts of its range. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17
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