Plant a Lindheimeriance. 221 



fusiformibus vix compressis 7-9-nerviis hirtellis coronula 

 integra soepius obsoleta superatis. — Margin of woods and 

 thickets, in sterile soil, Comale Creek and near New Braun- 

 fels (also 628.) April to June. A summer state, very much 

 branched and with smaller capituli, was gathered in Western 

 Texas by Mr. Wright. The plant has much the aspect of 

 Bellis integrifolia, though the heads are rather smaller, and it 

 branches diffusely in the same way, the branches terminated 

 by single capituli. — The type of the genus Keerlia must be 

 K. ramosa, DC, a Mexican plant collected by Keerl himself, 

 and with which the present plant appears to be a true con- 

 gener. K. linearifolia, DC is thought to have yellow rays, 

 which leaves its position doubtful. K. skirrobasis, DC, and 

 of Delessert's as well as of Hooker's figure, is doubtless Leu- 

 copsidium Arkansanum, DC, the Egletes Arkansana, Nutt., 

 as I have already remarked in Proceed. Amer. Acad. I. c, 

 and in Plantce Fendleriance, p. 71. The genus, as it thus 

 stands, takes the place in this country of Brachycome, from 

 which, as well as from Bellis, it is well distinguished by its flat 

 receptacle. Mr. Lindheimer's recent collection enables us to 

 add another Texan species, of a peculiar aspect, and remark- 

 able for its fewer-flowered heads, its flattened ray-achenia, 

 and entirely sterile disk, 1 viz. 



1 An amended character of the genus is subjoined : — 



KEERLIA, DC. Prodr. 5. p. 309. excl. sp. 2. et forte 1. 



Capitulum muhiflorum radiatum ; ligulis 6-25 uniserialibus femineis; fl. disci 

 hermaphroditis vel abortu masculis 5-dentatis. Involucrum campanulatum aut 

 turbinatum, pauci-pluriseriale ; squamis oblongis mucronatis vel acuminatis mar- 

 gine late scariosis. Receptaculum planum nudum. Achenia subteretia vel com- 

 pressa, disci omnia aut centralia saepe inania. Pappus parvus coroniformis. 

 — Herbae Mexicans et Texanae, humiles, rarnosse ; foliis alternis sessilibus inte- 

 gris ; capitulis parvulis solitariis vel paniculatis; ligulis albis vel cseruleis. 



§ 1. Achenia subteretia, fusiformia vel obpyramidata, nervosa: styli fl. disci ap- 

 pendice brevi obtusa superati. — Caules dichotome ramosi, ramis apice nudis mono- 

 cepbalis, capitulis mullifloris. 



1. K. ramosa, DC. 2. K. bellidifolia, Gray $• Engelm. supra. ?K. 



LINEARIFOLIA, DC. 



§ 2. Achenia radii plano-compressa calloso-marginata, disci omnia inania gra- 

 JOURNAL B. S. N. H. 29 JAN. 1850. 



