OF ARTS AND SCIENCES. 381 



Crusea subulata, Gray, Proc. Am. Acad. xix. (not Ilemsl., 

 which is an error for C. subalata, Hook. & Arn ), the Borrera subulata, 

 DC, a common Mexican species, was collected both by Pringle, 314, 

 and b}'^ Palmer, 423. 



Crusea Palmeri. C. Wrightii similis, pariter annua gracilisque, 

 ultrapedalis, sed puberula tantum ; foliis angusto-lanceolatis ; floribus 

 brevissime pedicellatis, pedicello cum ovario didymo glabro nudo ; 

 calyce fere C. parvijlorce, Hook. & Arn., extus hirsuto, lobis latiusculis 

 mucronatis; corolla albida iufundibuliformi calycem vix dimidio super- 

 ante, lobis ovatis sub apice uni-pauci-setiferis autheris cequilougis. — 

 Shaded hillsides, about 25 miles south of Batopilas and at much less 

 elevation, Palmer, 70. 



Spermacoce megalocarpa. S. IcBvigatcB ut videtur affinis, sub- 

 pedalis e radice annua brachiato-ramosa, glabra ; foliis ovatis oblongisve 

 acuminatis membranaceis (1-2-pollicaribus) pinnato-nervosis, inferi- 

 oribus longe subalato-petiolatis, summis basi contracta subsessilibus 

 capitulum laxum involucrantibus ; vagina stipularum scariosa truncata 

 setis paucis mollibus instructa rariusve nuda ; floribus in pleris axillis 

 perpaucis, in capitulo termiiiali sat numerosis ; corolla styloque ignota 

 (cito decidua) : fructu ovali (lin. 3-4 longo) Isevi coriaceo calycis lobis 

 4 filiformibus patentissimis mollibus ipso sa^pe a^quilongis superatis in 

 carpella duo deraum secedente, dissepimento tenui lato relinquente ; 

 semine elongato-oblongo. — Wet places in the higher mountains above 

 Batopilas, Palmer, 185. With mature fruit and apparently young 

 flowers, having also a fusiform ovary surmounted by the narrow linear 

 calyx-lobes ; but even in the youngest not a trace of corolla or genitalia 

 to be found. We have no Spermacoce of this habit, yet the fruit an- 

 swers to the Borreria section of that genus. 



Compositce. 



Vernonia (Eremosis) Steetzii, Schnltz P.ip. in Seem. Bot. 

 Herald, 297 ; a form with more slender heads. Ravines at the 

 Frailes, half-way between Batopilas and the summit of the moun- 

 tains, at about 7,000 feet. Stems herbaceous, " about 5 feet high," 

 Palmer, 273. 



Stevia STENOPiiYLLA, Gray, Proc. Am. Acad. xv. 25, This 

 species has now been collected, on shaded cliffs near Chihuahua, by 

 Pringle, G77. 



Stevia salicifolia, Cav. Low forms with aristate pappus, and 

 thinner leaves than usual, with now and then some coarse teeth. 

 Higher mountains near Batopilas, Palmer, 278, 391. And the var. 



