10 



ovate to lanceolate. The many rays mostly single, straight and 

 somewhat ascending, rigid, 2-5 cm. long, with many cobweb-like 

 pedicels divaricate at right angles and nodding or flexuous and a- 

 bout 1 cm. long. Glumes oval, obtuse, ^-f the lemma, smooth. 

 Lemma oval and obtuse. San Diego Canon, Sierra Madre Mts., 

 Chihuahua Mexico, Lower Temperate Life Zone. This may be a 

 form of S. Shepherdi with shorter glumes and smooth lemma. 



Sporobolus capillipes var. delicatulus n. var. 



This has elo» gated and capillary stems a foot or two long, weakly 

 spreading. Internodes a half longer than the narrow sheaths. 

 Leaves often 2[ # dm. long, not over 2 mm. wide, with thread-like 

 tip. Panicle lanceolate and flexuous, mostly exserted on filiform 

 peduncles and rather few-flowered. Glumes oblong-ovate, about f 

 the lemma. Soldier Canon Sierra Madre Mts. Chihuahua Mexico, 

 Lower Temperate Life Zone, Sept. 190'i 



Sporobolus confusus var. ab errans n. var. 



Glumes oblong, very long-hairy Lemma 1.5 mm. long, linear- 

 elliptical, scabrous, sparingly hairy on the nerves. Bowie Arizona 

 and Colon ia Juarez Chihuahua Mexico, Lower Temperate Life 

 Zone. 



ARISTIDA. 



In their treatment of this genus in Circ. 34 Piv. Agrost. 

 Scribner & Merrill make some errors. They speak of A. Americana 

 aa being a synonym of A. fasciculata Torr., and that it is a csesp- 

 itose and much-branched perennial. Whether it includes Torrey's 

 actual type 1 cannot say, but it is not a caespitose perennial but 

 an annual and is not caespitose but much-branched, in the fall, 

 from the rout and seeming caespitose. 



They keep A. pi^mrea distinct from A. longiseta because of 

 being tubercuhite on the lemma. All the forms in my herbarium, 

 referred by them to longiseta are tuberculate on the lemma, some 

 of them conspicuously so, especially the forms they refer to var. 

 Fendleriana, most of these are scabrous and tuberculate, that is 

 the tubercles end in short teeth at least on the upper part of the 

 lemma. 



A gracilis is an example of carelessness in citation, Vasey 

 gives it as published on page 15* of Elliott's Sketchbook (Cont. 

 Nat. Herb. 3 44.) The Kew Index gives it as page 141, when it 

 was page 142. Ou the same page Vasey is made to say that the 

 awns an* 3-6 inches and 1-3 inches long, which makes one feel like 

 hanging the average typesetter, for he i ever seems to think that the 

 author of a book. knows anything, and if he does not happen to 



