maxon: a new anemia from Mexico 199 



BOTANY. — A new Anemia from Mexico.^ William R. Maxon, 

 National Museum, 



The following new species is one of a number of interesting 

 ferns in a collection received by the U. S. National Museum 

 from Prof. C. Conzatti, of Oaxaca, Mexico, in 1917. At the 

 suggestion of Professor Conzatti it is named as below in honor 

 of his friend and fellow-collector, Dr. Emilio Makrinius. 



Anemia makrinii Maxon, sp. no v. 



Plants about 50 cm. high; rhizome short-creeping,d ensely clothed 

 with turgid acicular septate dark brown hairs; fronds several, close, 

 distichous, long-stipitate, the sterile and fertile ones nearly alike in 

 size and proportion. Fertile fronds erect, 45-50 cm. long; stipe 25 cm. 

 long, slender, dull strammeous from a dark base, narrowly sulcate later- 

 ally and ventrally in the upper part, deciduously blackish-fibrillose; 

 sterile lamina deltoid, 18-25 cm. long, 12-16 cm. broad, acuminate, 

 once pmnate, the rachis stramineous, deeply sulcate ventrally ancl 

 laterally, glabrate; sterile pmnae 7 or 8 pairs, distant, oblique, straight 

 or mostly falcate, the lowermost the largest, petiolate (4-10 mm.), 

 6-11 cm. long, 1.4-2 cm. broad, narrowly lance-oblong and long- 

 acuminate or tapering gradually from near the base to a long-attenu- 

 ate apex, the base subequilateral and broadly cuneate; succeeding 

 pinnae gradually shorter and more oblique, the upper ones free or 

 subsessile, much smaller than the conform or basally lobed terminal 

 segment; costa medial, percurrent, prominent beneath, stramineous, 

 sparsety fibrillose; veins free, very oblique, repeatedly dichotomous, 

 close, prommulous (especially beneath), glabrous; margins faintly 

 cartilagmous, serrate or m the outer part deeply biserrate, the teeth 

 very obHque, nearly straight, flat, acutish; leaf tissue thin-herbaceous, 

 dark green and somewhat iridescent above, paler beneath, glabrous; 

 fertile pinnae ascending, 10-16 cm. long, about half the length of the 

 sterile lamina, the panicle as long as the slender stalk or longer, flat- 

 tish, 8-15 mm. broad, the lower and middle segments remote, petio- 

 late; spores closely and rather sharply cristate-striate. Sterile fronds 

 similar, but the stipe relatively shorter and the blade more narrowly 

 triangular. 



T^'pe in the U. S. National. Herbarium, no. 867444, collected at the 

 Cafetal Nueva Esperanza, District of Pochutla, Oaxaca, Mexico, at 

 an altitude of 800 meters, April 9, 1917, by Prof. C. Conzatti, Dr. B. 

 P. Reko, and Dr. Emilio Makrinius (no. 3087). A second collection, 

 received more recently from Dr. Reko, is from the Cafetal Calvario, 

 Oaxaca. altitude 700 meters, September 30, 1917, Reko 3365. 



' Published with the permission of the Secretary of the Smithsonian Insti- 

 tution. 



