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PLANTZ FENDLERIANA. 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. Receptaculum convexum, 
nudum. Ligule circiter 12, elliptice, exserte (deciduz). Corolle disci infundibuli- 
formes, 5-dentate. Styli rami fl. hermaph. apice capitellato-truncati puberuli. Achenia 
elongata, teretia, multistriata, pappo simplici brevissimo, e paleis 6-8 liberis eequalibus 
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. 
H. Wricutm (sp. nov.): caule dodrantali a basi ramoso ; ramis adsurgentibus apice nudis monocephalis ; 
foliis anguste linearibus integris aut plerisque versus basin longe attenuatam utrinque dentibus laciniisve spinu- 
losis 1-3 instructis; bracteis subulatis appressis involucro turbinato chartaceo multum brevioribus; ligulis 
breviusculis ; receptaculo plano nudo; pappo achenio gracili sublongiore, e paleis angustis subeequalibus 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. Net, DC., appears to belong to this section. H.? Kunthii, DC. — Lasthenia obtusifolia, 8. DC. and 
Rancagua Bridgesii, Pepp. § Endl., according to Hook. § Arn. in Jour. Bot. 3. p. 320. 
§ 2. Palez pappi membranacew vel chartacew, 5 alterne plerumque breviores et truncate. Involucrum 
fere ebracteatum. — Herbe humillime, ramosissimz, annuz, vel basi suffrutescentes ; capitulis solitariis. 
* Glabre vel cinerea ; folia — pinnato-partita, segmentis paucis acerosis vel filiformibus: pedun- 
culi gracillimi nudi. 
H. renvirouium, Cass. Bull. Philom. 1817 § 1818, § Dict. 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, “ ov 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 sete. 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. renvitosum, 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 Neé, the habitat of which is unknown. It is 
said closely to resemble H. Berlandieri, except that the ten palee 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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