Macrothelypteris

(H. Itô) Ching

Acta Phytotax. Sin. 8: 308. 1963.

Etymology: Greek makros, large, thelys, female, and pteris, fern
Basionym: Thelypteris sect. Macrothelypteris H. Itô in Nakai & Honda, Nov. Fl. Jap. 4: 141. 1938
Synonyms: Thelypteris subg. Macrothelypteris (H. Itô).
Treatment appears in FNA Volume 2.
Revision as of 20:50, 16 December 2019 by FNA>Volume Importer

Stems short-creeping, thick, 1 cm diam. Blades 2-pinnate-pinnatifid nearly throughout, broadest at base, apex gradually reduced; pinnae pinnate-pinnatifid, sessile or stalked, not connected by wing along rachis; costae not grooved adaxially; buds absent; veins free, often forked, tips not reaching margin; rachises and costae lacking scales; indument abaxially of unbranched, septate hairs mostly over 1 mm. Sori round, medial to supramedial; indusia small, less than 0.3 mm diam., often obscured in mature sori; sporangial capsules bearing short-stalked glands. x = 31.

Distribution

Tropical and subtropical regions, North America, Asia, Africa, Pacific Islands, Australia in Queensland.

Discussion

Species ca. 10 (1 introduced in the flora).

Selected References

None.

... more about "Macrothelypteris"
Alan R. Smith +
(H. Itô) Ching +
Thelypteris sect. Macrothelypteris +
Tropical and subtropical regions +, North America +, Asia +, Africa +, Pacific Islands +  and Australia in Queensland. +
Greek makros, large, thelys, female, and pteris, fern +
Acta Phytotax. Sin. +
Thelypteris subg. Macrothelypteris +
Macrothelypteris +
Thelypteridaceae +