Distinguished from other subgenera by the combination of seasonal leaves, long-creeping stems 1–3 mm diam., pinnate-pinnatifid blades, veins often forked and meeting margins above the sinuses, scales along the abaxial costae, and by the proximal pinnae not or only slightly shortened. x = 35.
Discussion
Thelypteris palustris and T. confluens (Thunberg) C. V. Morton from the Southern Hemisphere constitute the subgenus Thelypteris, according to R. E. Holttum (1971).
Selected References
None.
Lower Taxa
... more about "Thelypteris subg. Thelypteris"
3-celled +
pinnalike +
2-pinnate +
pinnate-pinnatifid +
absent +
grooved +
Nearly worldwide +
green +
cordate +
not continuous +
needlelike +
stellate +
transparent +
various +
lacking +
hooked +
absent +
round-reniform +
monomorphic +
seasonal +
dimorphic +
prominent +
crested +
Icon. Pl. ed. Keller, 3 +
1763 +
grooved +
monolete +
bilateral +
long-creeping +
long-creeping;ascending +
Thelypteris subg. Thelypteris +
Thelypteris +
subgenus +
crescent--shaped +
free +
forked +
free +
distinguished +