14 PROCEEDINGS OF THE AMERICAN ACADEMY 



vioribus herbaceis ; receptaculo subplano; ligulis pauciusculis parvuUs; 

 acheniis obovatis subpilosis aut anguste aut latiuscule alatis aristis 2 

 gracilibus parum longioribus. — Cedros (miscalled Cerros) Islands, off 

 Lower Califoruia ; spec, in herb. Calif. Acad., the collector unknown. 



§ 3. XiMiNESlA. Capitula (sparsa) lata, disco subplano : involucrum 

 laxe patens, e bracteis linearibus foliaceis : ligulaa plures, majus- 

 culoe, fertiles : cast, proecedeutis. 



V. ENCELioiDES, Bcnth. & Ilook. 1. c. ex Ilemsley, 1. c. Ximinesia 

 encelioides, Cav. le. ii. GO, t. 178. A familiar Mexican species, now 

 widely disseminated. 



V. COAHUILENSIS. Adsurgcns e radice perenni, pedalis ; caulibus 

 foliosis subramosis hirsutis ; foliis discoloribus (supra hirto-pubescenti- 

 bus subtus tomento albido canescentibus) lato-lanceolatis repaudo- nunc 

 argute serratis basi parum angustata sessilibus plerisque secus caulera 

 alato-decurrentibus ; capitulis panels (lin. 4-5 altis) ; involucro sub- 

 campanulato e bracteis linearibus foliaceis ncqualibus sursum patentibus ; 

 ligulis 8-10 linearibus foemiueis fertilibus ; disco convexo ; acheniis 

 parvulis hirsutis ut videtur omnibus exalatis aristis gracillimis hand 

 longioribus, vel in radio arista altera dimidio breviore. — Mountains 

 six miles east of Saltillo, Coahuila, Palmer, 584, 619. Species appar- 

 ently allied to V. mollis, HBK., and intermediate between the Ximu 

 nesia and Pterophyton sections. 

 § 4. Hamulium, DC. Capitulum (longe pedunculatum snepius soli- 



tarium) latum, hemisphajricum : involucrum breve : ligulas plurimae 



disco breviores, fertiles : achenia 1-2-aristata, aristis graciHbus, uno 



alterove apice hamato. Caet. fere § 2. 



V. alata, L., HamuUum alatum, Cass. Diet. xx. 2G1 ; said to be 

 Mexican as well as W. Indian. 



V. ancistrophora. Ancistrophora Wrigldii, Gray, Mem. Am. 

 Acad. n. ser. vi. 457. HamuUum Wrightii, Schultz Bip. Verbesina 

 Wriglitii, Griseb. Cat. Cub. 155. A delicate and stemless Bellis-like 

 little annual, of Cuba, the original specific name of which is super- 

 seded by the Texan plant formerly referred to Actinoineris. 

 § 5. Plattpteris, DC. excl. § 2. Capitula hemispherica, magna vel 



majuscula, radio deficiente homogama ; floribus disci numerosissimis 



croceis : involucrum imbricatum pluriseriale : receptaculi paleaj an- 



gusta;, carinatK, carina pi. m. hispidulo-ciliata: folia opposita, secus 



caulem alato-decurrentia. 



V. CROCATA, Less., DC, cum syn. 



V. Fraseri, Ilemsl. Biol. Centr.-Am. Bot. ii. 187, t. 48. Near to 



