122 



PLANT^ TfRIGHTIAN^. 



V. 



year 1848, and liave had it in cultivation for three or four years in the Cambridge 

 Botanic Garden ; wliere it proves to be one of the handsomest annuals of the fam- 

 ily, of very neat foliage, and producing a succession of large, bright golden-yellow, 

 long-pcdunclcd capitula during the whole summer. The pappus resembles that of 



Gaillardia, except 



382. IIelenium 



TENuiFonuM, Nutt. 171 Jour. Acttd. Philad. 7. p. 66; Torr. §• 



Grai/, Fl. 2. p. 385. Bed of the Limpia, Aug. 

 383. AcTiNELLA scArosA, Niitt. ; Torr. <^ Gray, Fl. 2. p. 382 



Hills of the Eio 



1 



.Tune. 



form, in the coUection of 185 



384. A. LiNEARiFOLiA, Torr. 8f Grau, l. 



Gray, PL Lindh 







the Leona 



Junc 



A larger and more strict form, 18 inches high, with larger capi 

 llcction of 1851. 



385. A. ODORATA, Groy, PL FendL p. 101, adnot. Hymenoxys odorata, DC. ! 

 Prodr. 5.p. 661; Deless. Ic. SeL 4. t. 42. Low banks of the Rio Grande, below 



Ell 



Sept 



Berlandier's SDccimens were collected between Laredo and Bexar 



Tcxas, according to the ticket in Hookefs herbai 

 J/. B. K. ! is a close congcncr of this species ; as h 



A. chrysanthemoid 



A. integrifolia, H. B 



(Oxy 



Benth. /), which is omitted by De Candolle, of the entire-leaved 



Hymcnoxys anthcmoidcs, Cass. and 11. Heenkeana, DC, although rayless, will form 



(Ilymcnoxys) of Actinella. Cephalopl 



radiata, 



Jlook. 8f Arn. is, I believe, no more than a variety of A. heterophylla, Pers., which 



vants the rays. C. fruticosa, HooJc. 8c Arn. (which is also C. 



Arn.) is a distinct species, and very likely the C. radiata of 



g removed, Cephalophora will be restricted to De Candolle's 



I thhik 



Donianr 

 liCssing, 



7/yoA 



These bein 



first section, with globose heads and a reflexed 



ucre. 



SAETAVELLIA, Nov. Gen 



Capitula pluriflora, conferte fastigiato-corymbosa, heterog 



fl 



fccraineis 3 - 5 ; disci 

 5 - 6-pl 



& 



12 tubulosis hermaphroditis. Involucrum disco brevius, 

 valibus membranaceis sequalibus. Eeceptaculum subpla- 

 num nudum. Llgulaj ovales, corollas disci (limbo cyathiformi 5-fido) haud super- 

 antes. Styli rami fl. disci breves, complanati, revoluti, apice truncati. Achenia 



10-costata, pappo calyculato integro margine multi-denticulato, tubum pro- 



prium corolkc disci adjequante, coronata. — Herba erecta, multicaul 



glab 



pedal 



capituhs parvulis brcviter pedicell 

 386. Sartwellia Ft, 



foliis oppositis filiformi-Iinearibus integerrimis impunctat 



fl 



E. (Tab. VL) — Prairies of the Bio Seco, Texas, and 

 mountam valleys and plains of tlie Pccos, and base of the Guadalupe Mountains ; 



July - Oct. — The figure and 

 plant unnecessarv 



B 



character 



detailed description of this 



aud is chiefly rem^ 

 Flaverica, to which 



It is entirely diflterent from any published genus known to me^ 



able fi 



its 

 of 



dating 



the distincti 



whole hab 



obliged to refer it, notwithstanding the pappus and 



and general 



of the subtribe 

 iharacters. I am 



fasciclcd, though crowded) capitula 



pedicellate (not 



I take pleasure in dedicating the 



