48 PROCEEDINGS OF THE AMERICAN ACADEMY 



plane nullo). — In sylvis juxta New Braunfels, Texas, Lindheimer. — 

 Spithamasa, gracilis, habitu fere Bellidis integrifolise sed minor recep- 

 taculo piano, necnon Brachycomes Xanthocomoidis ? Torr. <^ Gr., sed 

 diversa achceniis revera calvis, receptaculo piano, etc. (Keerlia skir- 

 robasis, DC, est planta depauperata Leucopsidii Arkansani, DC.) 



" Tetragonotheca Texana ( Gray ^ Engelm., I. c.) : caulibus e 

 radice perenni crasso plurimis gracilibus puberulis ; foliis glabris ob- 

 longis sinuato-dentatis pinnatifidisve basi connatis imis marginato- 

 subpetiolatis ; tubo corollse glanduloso nee ptloso ; ovario glabro ; 

 achseniis 4 - 5-angulatis striatis. — In collibus juxta flumina Guada- 

 loupe et Cibolo, Texas, Lindheimer. — Pedalis, capitulis dimidio mi- 

 noribus quam in T. helianthoide. 



" BARRATTIA, Gray ^ Engelm., PI. Lindh. ined. 

 (Senecionidese-HelianthesB-Euhelian these.) 



" Capitulum multiflorum heterogamum ; fl. radii ligulatis (circ. 10) 

 neutris, disci tubulosis hermaphroditis, Involucrum imbricatum triseri- 

 ale, squamis lanceolatis apice herbaceis disco brevioribus. Recepta- 

 culum convexum, paleis navicularibus persistentibus achsenia amplec- 

 tentibus. Corolla fere Helianthi. Styli rami elongato-subulati, hispid i. 

 Achaenia compresso-plana, emarginato-obcordata, glabra, immarginata, 

 calva. — Herba valida perenni, strigosa, corymboso-ramosa ; foliis om- 

 nibus opposilis deltoideo-ovatis vel subhastatis inciso-dentatis tripliner- 

 viis petiolatis, petiolis basi appendicibus foliaceis interpositis connatis ; 

 pedunculis solitaris elongatis monocephalis. Flores radii et disci flavi. 



" B. CALVA. — In rupestribus prope originem flum. Guadaloupe, Tex- 

 as, Lindheimer. — Genus a Leighia diversa pappo plane nullo, ab En- 

 celia achreniis non comosis, a Wulfia achceniis compresso-planis, etc., 

 diximus in honorem Joseph! Barratti, M. D., botanici inclyti, Salicum 

 prsecipue indagatoris. 



" It may be proper to append here the characters of another unpub- 

 lished Helianthoid genus, which is even more closely allied to Encelia 

 (although well distinguished by its pappus), and is also analogous to 

 Agarista. 



" GER^A, Torr. ^ Gray, Fl. N. Amer. ined. 



" Capitulum multiflorum heterogamum ; fl. radii (circ. 15) ligulatis, 

 neutris, disci tubulosis hermaphroditis. Involucrum laxe imbricatum 



