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11. Gleicheniaceae

里白科 li bai ke

Authors: Jin Xiaofeng, Bingyang Ding & Kunio Iwatsuki

Plants terrestrial, often forming thickets. Rhizomes long creeping, protostelic, with scales or multicellular hairs. Fronds monomorphic, evergreen, erect, scrambling, or climbing, vernation circinate; stipe not articulate, distant, cylindrical, apex forked, with dormant bud; apical bud covered with hairs or scales; rachis simple to several times pseudodichotomously branched [or pinnate], with stellate hairs and/or ciliate scales when young, these persistent or glabrescent; pinnules pectinately pinnatisect; lobes elliptic or lanceolate, apex obtuse or acute; veins free, forked; lamina papery or subleathery, frequently glaucous abaxially. Sori in 1(-3) lines on both sides of lobe costules, orbicular, exindusiate; sporangia 2-10[-16], sessile, turbinate, with a mid-transverse annulus; spores tetrahedral or reniform, without perispore, smooth.

Three to five genera depending on concepts of authors and over 150 species: tropical and subtropical areas; three genera and 15 species (six endemic) in China.

Most species in the Gleicheniaceae are characteristic of very mineral-poor soils.

Ching Ren-chang, Fu Shu-hsia, Wang Chu-hao & Shing Gung-hsia. 1959. Gleicheniaceae. In: Ching Ren-chang, ed., Fl. Reipubl. Popularis Sin. 2: 116-132, 346-350.

1 Veins 2- or 3-forked with (3 or )4-6 veinlets in each group; rhizome with hairs only; fronds dichotomously divided with a pair of lateral pinnules at most dichotomies; sporangia 5-18 per sorus.   1 Dicranopteris
+ Veins 1-forked with 2 veinlets in each group; rhizome with scales; fronds without lateral pinnules at dichotomies; sporangia 2-5(or 6) per sorus   (2)
2 (1) Rachis undivided, producing successive pairs of 2- or 3-pinnatifid pinnae; penultimate axes of frond without lamina; spores tetrahedral.   2 Diplopterygium
+ Rachis pseudodichotomous; penultimate (and often lower) axes with well-developed lamina; spores ellipsoid.   3 Sticherus

Lower Taxa


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