﻿PLANTiE FENDLERIANiE. 87 



the plant raised from seed in the Cambridge Botanic Garden the flowering branches are 



more leafy, and bear three or four heads on shorter peduncles. Achenia half an inch 



long. The species should stand next to B. bipinnata. 



f402. B. frondosa, Linn. Ford of the Arkansas, &c. ; Sept. (443.) 

 1 402 bis. B. connata, Muhl. Low plains near Council Grove ; Sept. (439,435.) 

 403. Ximinesia encelioides, Cctv., 8. cana, DC. Waste grounds, about Santa 



Fe ; May to Sept. (421.) Also in the Raton Mountains, along the Rio de los Animos. 



— Wings of the achenia opaque and thickened. The plant raised from these seeds in the 

 Botanic Garden, Cambridge, is much less canescent. 



S f404. Sanvitalia Aberti (sp. nov.) : caule erectiusculo ramoso ; foliis lanceolatis 

 trinervatis hispido-scabris in petiolum attenuatis ; capitulis primariis pedunculatis nudis ; 

 involucro disco (viridi-flavo) fructifero brevioribus ; ligulis ovatis longitudine achenii aris- 

 tas duplo excedentibus ; acheniis disci fere conformibus compresso-quadrangulatis tuber- 

 culatis exalatis paucisve suberoso-subalatis apice emarginatis calvis aut minime uniaristu- 

 latis. — Woodlands, between Santa Fe and Pecos ; Aug. (538.) — The specimens have 

 barely produced the primary heads (which are much smaller than in S. procumhens). 

 The fruit, &c, is here described from a mature specimen in Dr. Torrey's herbarium, 

 gathered by Lieut. Abert, between Bent's Fort and Santa Fe. The plant is a span 

 high, and bears all its terminal heads on naked peduncles half an inch long ; and the disk 

 is greenish-yellow, not purple nor blackish. Ligules a little more than a line long.* 

 s 405. He^erospermum tagetinum (sp. nov.) : caule bifariam hirsutulo ; foliis pin- 

 nato-3 -7-partitis more Tagetis pellucido-glandulosis, segmentis linearibus integerrimis ; 

 squamis involucri exterioris 3 linearibus capitulum superantibus ; acheniis radii ala an- 

 gusta crassa arete inflexa cinctis, disci exterioribus calvis centralibus rostratis biaristatis. 



— Woodlands, twelve miles west of Las Vegas, New Mexico ; Aug. (534.) — Annual, 

 a foot high ; the foliage, involucre, &c, much as in .H. pinnatum ; but the segments of 

 the leaves are entire, and pellucid-punctate with abundance of coarse glands, as in Tage- 

 tes, those near the margins oblong, the others mostly globular and smaller. The awnless 

 achenia are obovate and very glabrous ; the three or four central are flat, and taper into an 

 upwardly hispid-scabrous beak, which bears a pair of retrorsely aculcolate, deciduous 

 awns. In H. pinnatum, the original species of the genus (which in these respects is not 

 well characterized by De Candolle), all the disk-achenia are 2-awned and more or less 



* Oligogyne Tampicana, DC, occurs abundantly in the collections made by Dr. Gregg and others in 

 Tamaulipas, at Monterey, &c. Only some of the terminal heads are long-pedunculate : the later ones are 

 frequently almost sessile. 



