Actinostachys

Wallich

Numer. List. 1. 1829.

Common names: Ray spiked fern
Etymology: Greek aktis, ray, and stachys, spike, referring to the rays of the fertile leaves
Treatment appears in FNA Volume 2.

Plants terrestrial. Roots dark, fibrous, covered with dark, stiff hairs, 2–3 mm. Stems upright; hairs uniseriate. Leaves all fertile (even youngest), unbranched, long-petioled. Blades falsely digitate, reduced to 2–many erect to spreading terminal rays; rays appearing to whorled but actually borne on very short rachis. Sporangia in 2–4 rows. Gametophytes subterranean, not green, tuberlike, brown-hairy. x = 134, 140.

Distribution

Nearly worldwide in tropical regions

Discussion

Species 20 (1 in the flora).

... more about "Actinostachys"
Warren H. Wagner Jr. +
Wallich +
fist-like +
reduced +
Ray spiked fern +
Nearly worldwide in tropical regions +
Greek aktis, ray, and stachys, spike, referring to the rays of the fertile leaves +
fan--shaped +
long-petioled +  and unbranched +
rudimentary +
Numer. List. +
wagner1985a +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2 (?) +  and 4 (?) +
Actinostachys +
Schizaeaceae +
epiphytic +  and terrestrial +
140 +  and 134 +