﻿122 Greene : New Compositae from New Mexico 



thickish and obtuse angles and several intervening striae ; the 

 outer achenes glabrous, surmounted by a pair of stout divergent 

 smooth and persistent awns which are channeled above, and run- 

 cinate at tip ; inner achenes a fourth shorter than the others, pu- 

 bescent and somewhat rugose-tuberculate, their awns shorter, 

 stouter and divaricate. 



^ WOOTONIA PARVIFLORA. 



Stoutish annual i° or 2° high; leaves ternately dissected into 

 elongated and narrowly linear segments, the whole herbage glab- 

 rous : heads very small, on filiform peduncles, these much elon- 

 gated in fruit and spreading or deflexed. [Plate 333.] 



On plains near the White Sands, Dona Ana County, August 

 25 (no. 393). A quite distinct new type, about equally allied to 

 Bidens and Cosmos, but impossible to be referred to either. 



^Laphamia CERXUA. 



Low and herbaceous stems from a short ligneous crown, only 

 3' or 4' high, with 3 or 4 pairs of rather ample leaves and a soli- 

 tary terminal short-peduncled large head at first nodding and con- 

 cealed beneath the leaves ; plant nearly glabrous and slightly 

 fleshy : leaves round ovate to deltoid-ovate, $£' long and as 

 broad, coarsely and quite evenly dentate, the petiole rather longer 

 than the blade : campanulate involucre nearly *4' high: flowers 

 dull orange yellow : rays none : corollas with short proper tube 

 and long cylindric throat : outer and fertile achenes compressed, 

 callous-margined, nerveless, puberulent, the inner infertile ones 

 merely 4-angled ; pappus in all of numerous very unequal barbel- 

 late bristles, the longest about equaling the proper tube of the 

 corolla. [Plate 333.] 



Organ Mountains, at 6500 feet altitude, September 4 (no. 476). 



A very 



"Senecio Wootonii. 



Stout, perennial, 2 high, leafy below, naked and loosely 

 corymbose-panicled above, the whole plant glabrous from the first 

 and glaucescent: leaves broadly or more narrowly lanceolate, 

 6'-I0' long, including the long winged and basally dilated 



petiole, the margins coarsely and obtusely dentate or serrate- 



toothed: heads #' high, numerous, erect, on long naked or 

 hnear-bracted peduncles; bracts of the campanulate involucre few 



and broad, thin-margined, acute : rays few, short, deep yellow : 

 achenes columnar, glabrous, light-colored. [Plate 331 ] 



