Anemia donnell-smithii Maxon

Anemia donnell-smithii Maxon, sp. nov
Rhizome and sterile fronds wanting. Fertile fronds ample, the sterile lamina as long as the stipe or longer ; stipe relatively very slender, 20-25 cm. long, canaliculate, darkstramineous, sparsely rusty-pilose, especially toward the base ; sterile lamina oblong-lanceolate, acutish, 27-29 cm. long, 9 cm. broad near the base, once-pinnate, the rachis slender, rusty pilose, glabrescent ; pinnae about 14 pairs, approximate or contiguous, spreading, the lower ones about 4.5-5 cm. long, 2-2.5 cm. broad, opposite, rectangular-oval from an unequally and narrowly cuneate base, the upper side less oblique than the lower at the base, the apex obtuse, the margins finely and unequally fimbriate-crenulate, slightly thickened ; upper pinnae very gradually smaller, alternate, all but the uppermost sessile, these ascending, semiadnate, spatulate, slightly decurved, greatly reduced, finally confluent and forming a slender lobed subcaudate terminal segment ; leaf-tissue papyraceormembranous, above dark-green, glabrous or with a few very short minute hairs between the elevated veins, below lighter, glabrous, minutely and sparingly glandular, the veins immersed ; fertile pinnae 11-21 cm. long, diverging at a wide angle from the much longer sterile lamina, the panicle pilose, a little shorter than the stalk, stout, with strong close branches, the lower ones apart ; spores striate, not echinulate. .
Type collected at Rio Perraejo, Department of Santa Barbara, Honduras, altitude about IROO meters, December, 1888, C. Thieme, distributed by Capt. John Donnell Smith under no. 5664
(U. S. Nat. Herb. no. 830288).
Distribution : Known only from the type collection.