﻿PLANTS FENDLERIANjE. 89 



408. LOWELLIA, Nov. Gen. Tagetinearum. 



•^ Capitulum multiflorum, heterogamum; floribus radii ligulatis foemineis, disci tubulosis 

 hermaphroditis. Involucrum campanulatum, ebracteatum, gamophyllum ; squamis sub- 

 biserialibus lanceolatis inferne carinatis ultra medium coalitis. Rcceptaculum convexum, 

 nudum. Ligulae circiter 12, ellipticae, exsertse (decidual). Corc-llrc disci infundibuli- 

 formes, 5-dentata?. Stjli rami fl. hermaph. apicc capitellato-truncati puberuli. Achenia 

 elongata, tcretia, multistriata, pappo simplici brevissimo, e paleis 6-8 liberis aequalibus 



361. In moist places, Western Louisiana, Leavenworth ; and Texas, Drummond, Lindheimer, Wright ; flow- 

 ering in August and September. — Manifestly allied to the next, which has strictly the characters of Hymena- 

 therum, although of different habit from the original species. 

 s H. Wrightii (sp. nov.) : caule dodrantali a basi ramoso ; ramis adsurgentibus apice nudis monocephalis ; 

 foliis anguste linearibus integris aut plerisque versus basin longe altenuatam utrinque dentibus laciniisve spinu- 

 losis 1-3 instructis ; bracteis subulatis appressis involucro turbinato chartaceo multum brevioribus; ligulis 

 breviusculis ; receptaculo piano nudo ; pappo achenio gracili sublongiore, e paleis angustis suba:qualibus trifi- 

 dis omnibus 3-aristatis, arista media corollam fl. disci paulo superante lateralibus duplo longiore. — In dry 

 Post-Oak woods between the Rio Colorado and Rio Guadeloupe, Texas, Mr. Charles Wright. Also on the 

 Piedernales, Lindheimer. Flowering from April to June. — Heads smaller than in the preceding; the scales 

 of the involucre perfectly united in one series. Leaves one or two inches long, scarcely a line wide. 



H. Ne.ei, DC, appears to belong to this section. II. ? Kunthii, DC. = Lasthenia obtusifolia, /3. DC. and 

 Rancagua Bridgesii, Papp. c$* End!., according to Hook, fy Am. in Jour. Bot. 3. p. 320. 



§ 2. Palece pappi membranacea: vel chartaceoe, 5 alternoe plerumque breviores et truncataa. Involucrum 

 fere ebracteatum. — Herbse humillimce, ramosissimse, annus, vel basi suffrutescentes ; capitulis solitariis. 



* Glabra vel cinerece ; folia rigida pinnalo-partila, segmenlis paucis acerosis vel filiformibus : pedun- 



culi gracillimi nudi. 

 S H. tenuifolium, Cass. Bull. Philom. 1817 Sf 1818, 8f Diet. Sci. Nat. 22. p. 314, the original species 

 of the genus, is still obscure. It was described from a specimen in the herbarium of Jussieu, " ou il est dit 

 avec doute qu'elle vient du Chili." It is said to be a small, diffuse, annual plant, with angled stems, opposite 

 and filiform pinnate leaves, and solitary heads terminating the branches. In the generic character, the scales 

 of the involucre are said to be united nearly to the summit ; the pappus of 10 membranaceous scales, which 

 are cleft above into two or three barbellulate setse. Probably it should be placed in the foregoing section. 

 Hooker and Arnott (in Jour. Bot. 3. p. 320) suspect it may be their H. Candolleanum, from Mendoza and 

 North Patagonia. De Candolle doubtfully refers it to 



• H. tenuilobum, DC. Prodr. 5. p. 642. This is described from a specimen of Berlandier, gathered in 

 the vicinity of Bexar, Texas, and from one in the collection of Nee, the habitat of which is unknown. It is 

 said closely to resemble H. Berlandieri, except that the ten palete of the pappus are all (alike ?) 3-cleft at the 

 apex, with the middle lobe setiform, the lateral ones short and nearly membranaceous. — I have seen no spe- 

 cimens which agree with this as to the 10-awned pappus. But I possess a Texan specimen, communicated 

 by Mr. Wright (who informs me that it is not of uncommon occurrence from the Nueces to the Rio Grande), 



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