104 BOTANY. 
ACTINOMERS SQUARROSA, Nutt, Gen. 2, p. 131. Near Shawneetown, on the Canadian river; 
August. 
THELESPERMA GRACILIS, Gray in Kew Jour. Bot. 1, p. 252, & Pl. Wright 1, p. 109. Denuded 
prairies on the False Washita ; August. 
COSMOS BIPINNATUS, var. PARVIFLORUS, Gray, Pl. Wright. 2, p. 90. Plains and pine woods in the 
mountains near Laguna Blanca ; September ; (in fruit.) 
BIDENS CHRYSANTHEMOIDES, Michr. San Domingo, New Mexico, in wet places; October. 
BIDENS TENUISECTA, Gray, Pl. Fendl. p. 86. Banks of the Pecos; October. 
BIDENS BIPINNATA, Linn. Hurrah creek, in rocky places ; September. 
Leptosyneé DovaLasIt, DC. Prodr. 5, p. 531. San Gabriel and Cocomungo, California; March. 
PUGIOPAPPUS, Nov. Gen. 
Capitulum, etc., fere Coreopsides ; sed flores radii fæminei fertiles ; tubus corolle disci (fauce 
infundibulari-campanulata haud longior) apice annulatus. Ovaria plano-obcompressa, ovalia, 
glabra; radii ala angusta cincta, calva; disci marginata, pappo gerentia e squamellis 2 
pugioniformibus triquetris, angulis anguste alatis denticulatis, corolla vix dimidio brevioribus, 
constante. Herba monocarpica, pumila, glabra, subcaulescens, facie Leptosynis; caulibus 
scapisve sub-1-2-foliatis monocephalis; foliis alternis pinnatisectis, segmentis cum rhachi 
anguste linearibus ; corollis radii et disci flavis. 
Pucropappus BreEgrovir. On the Mohave creek, in the desert east of the Colorado; March. 
The accessions which may be expected are not unlikely to efface the distinctions between several 
admitted genera, mostly founded on single plants, resembling Coreopsis or Bidens except in hav- 
ing fertile rays. The present plant, which we possess only in an early flowering state, approaches 
. the incompletely-known Narvalina, Cass. (a West Indian opposite-leaved shrub) in floral 
characters, but it could hardly be joined to that genus with our present knowledge. It is to 
Leptosyne much what Agarista is to some sections of Coreopsis; but it is distinguished by the 
short tube of the disk-corolla, marked at the summit by a beardless ring, as wellas by the 
pappus; yet, from the analogous case of Coreopsis, one should not be surprised if future dis- 
coveries were to connect them. 
HETEROSPERMUM TAGETINUM, Gray, Pl. Fendl. p. 81. With the preceding. 
SANVITALIA ABERTI, Gray, Pl. Fendl. p. 87, & Pl. Wright. 1, p. 111. La Cuesta; September. 
XIMENESIA ENCELIOIDES, Cav. Plains from the Canadian to New Mexico ` September. 
VERBESINA VIRGINICA, Linn.; Torr. & Gray, Fl. 2, p. 359. Prairies on the Canadian; August. 
FLAVERIA ANGUSTIFOLIA, Pers.; DO. Prodr. 5, p. 635. Sandy bottoms of the upper Canadian ; 
September. In all probability not distinct from F. Contrayerba. 
DysoDIA CHRYSANTHEMOIDES, Lagasca; DC. Prodr. 5, p. 640. Plains from the Canadian to 
the Galisteo, New Mexico; August—October. 
HYMENATHERUM (ACIPHYLLEA) ACEROSUM, Gray, Pl. Wright. 1, p. 115. Bluffs of the Llano 
Estacado ; September. 
YMENATHERUM TENUIFOLIUM, Cass.; Gray, Pl. Wright. 1, p. 118. Bill Williams’ fork, West 
New Mexico; February. 
LowELLIA AUREA, Gray, Pl. Fendl. p. و91‎ € Pl. Wright. 1, p. 118. Dogtown prairies, on 
the Llano Estacado, &c.; September. 
GAILLARDIA PINNATIFIDA, Torr. in Ann. Lyc. New York 2, p. 214; Torr. € Gray Fl. 2, p. 366. 
Prairies of the Llano Estacado ; September. 
GAILLARDIA PULCHELLA, Foug.; Torr. & Gray, 1. c. Prairies on the Canadian ; September. 
PALAFOXIA HOOKERIANA, Torr. € Gray, Fl. 2, p. 368. Sand-hills on the Canadian, from 
Shawneetown ; August-September. 
Pararoxia TExANA, DC. Prodr. 5, p. 125. Shawneetown ; with the foregoing species. 
CHÆNACTIS GLABRIUSCULA, DC. var. MEGACEPHALA. Hill-sides and near rivulets, at Knight's 
ferry, on the Stanislaus, and Ione valley, California; May. Heads from 6 to 9 lines in length. 
Flowers yellow ; the ray-corollas conspicuously ampliate. Pappus mostly of 4 silvery pale ; 
