BOTANY. 
104 
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Actinomers squarrosa, Nutt. Gen. 2, p. 131. Near Shawneetown, on the Canadian river; 
August. 
Thelesperma gracilis, Gray in Keiv Jour. Bot. 1, p. 252, & PI. Wright 1, p. 109. Denuded 
prairies on the False Washita ; August. 
Cosmos bipinnatus, var. parviflorus, Gray, PI. Wriglit. 2, p. 90. Plains and pine woods in the 
mountains near Laguna Blanca ; September ; (in fruit.) 
Bidens ciirysanthemoides, Michx. San Domingo, New Mexico, in wet places ; October. 
Bidens tenuisecta, Gray, PI. Fendl. p. 86. Banks of the Pecos ; October. 
Bidens bipinnata, Linn. Hurrah creek, in rocky places ; September. 
Leptosyne Doitglasii, DC. Prodr. 5 ,p. 531. San Gabriel and Cocomungo, California; March. 
PUGIOPAPPUS, Nov. Gen. 
Capitulum, etc., fere Coreopsides ; sed flores radii foeminei fertiles ; tubus corollre 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-l-2-foliatis monocephalis; foliis alternis pinnatisectis, segmentis cum rhachi 
anguste linearibus ; corollis radii et disci flavis. 
Pugiopappus Bigelovii. 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 tbe disk-corolla, marked at the summit by a beardless ring, as well as 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, PI. Fendl. p. 87. With the preceding. 
Sanvitalia Aberti, Gray, PI. Fendl.p. 87, & PI. Wright. 1, p. 111. La Cuesta; September. 
Ximenesia encelioides, Cav. Plains from the Canadian to New Mexico ; September. 
Verbesina Virginica, Linn.; Torr. & Gray, FI. 2 ,p. 359. Prairies on the Canadian ; August. 
Flaveria angustifolia, Pers.; DC. Prodr. 5 ,p. 635. Sandy bottoms of the upper Canadian; 
September. In all probability not distinct from F. Contrayerba. 
Dysodia ciirysanthemoides, Lagasca; DC. Prodr. 5, p. 640. Plains from the Canadian to 
the Galisteo, New Mexico ; August—October. 
Hymenatherum (AciphylLjEa) acerosum, Gray, PI. Wright. 1 , p. 115. Bluffs of the Llano 
Estacado ; September. 
Hymenatherum tenuifolium, Cass.; Gray, PI. Wright. 1, p. 118. Bill Williams’ fork, West 
Hew Mexico; February. 
Lowellia aurea, Gray, PI. Fendl. p. 91, & PI. Wright. 1, p. 118. Dogtown prairies, on 
the Llano Estacado, &c.; September. 
Gaillardia pinnatifida, Torr. in Ann. Lyc. Neiu York 2 , p. 214; Torr. & Gray FI. 2, p. 366. 
Prairies of the Llano Estacado ; September. 
Gaillardia pulchella, Foug.; Torr. & Gray, l. c. Prairies on the Canadian ; September. 
Palafoxia IIookeriana, Torr. & Gray, FI. 2, p. 368. Sand-hills on the Canadian, from 
Shawneetown ; August-September. 
Palafoxia Texana, DC. Prodr. 5 , p. 125. Shawneetown ; with the foregoing species. 
Ch*hnactis glabriuscula, DC. var. megacephala. Hill-sides and near rivulets, at Knight’s 
ferry, on the Stanislaus, and lone valley, California ; May. Heads from 6 to 9 lines in length. 
Flowers yellow ; the ray-corollas conspicuously ampliate. Pappus mostly of 4 silvery paleae; 
