BOTANY. 
97 
Machasranthera tanacetifolia, Nees. Ast., p. 224; Gray, PI. Wright. 1, p. 90. On the Ca¬ 
nadian, &c. ; September. 
Macileranthera canescens, Gray, PI. Wright. 1, p. 89. Banks of the Pecos, &c., northwest¬ 
ern Texas, (smooth varieties) ; gravelly hills near the Colorado of the west; February. 
Aster Bigelovii (sp. nov.) : ramis viscido-hirsutis ad apicem usque foliosis; ramulis corym- 
bosis monocepnalis ; foliis membranaceis oblongo-lanceolatis semiamplexicaulibus grosseserratis 
tenuiter triplinerviis hirto-puberulis glabratis ; capitulis magnis globosis ; involucri plurise- 
rialis squamis attenuato-subulatis basi appressis superne longecaudato-appendiculatis squarroso- 
recurvis glanduloso-viscidis ; acheniis glaberrimis. Arroyos in the Sandia mountains ; Octo¬ 
ber. A wholly new and most remarkable Aster, of the Grandiflori group ; but the apparently 
showy heads larger than those of A. grandiflorus, being an inch in diameter, and the numerous 
(blue and violet) rays an inch long. It is probably a tall plant; but the base of the stem was 
not collected. Cauline leaves two or three inches long, coarsely dentate-serrate throughout; 
the uppermost, and those of the short branchlets, smaller and less toothed. Scales of the imbri¬ 
cated involucre half an inch long when extended, very slender ; the long and almost filiform 
appendicular portion recurved, spreading and very glandular. Receptacle flat, alveolate ; the 
alveola? short and entire. Achenia perfectly glabrous, linear, compressed, three lines long. 
Pappus not abundant, nearly in a single series. 
Aster Novi-Belgii, Linn.; Gray, PI. Wright. 2, p. 16. Sandia mountains, New Mexico. 
Aster ljevis, Linn.; Torr. & Gray, FI. 2 , p. 116. San Antonio, New Mexico; October; in 
mountain ravines. 
Aster patens, Ait. ; Torr. & Gray, l. c. On the Canadian, &c. ; August-September. 
Aster multiflorus, Ait. Rocky dell, Eastern New Mexico ; September 17. 
Aster Nuttallii, Torr. & Gray, FI. 2, p. 126 ; var. Fendleri ; foliis rigidioribus hispido- 
ciliatis; involucri squamis granuloso-glandulosis. A. Fendleri, Gray, PI. Pencil, p. 66. 
Rocky ravines and canons, Llano Estacado ; September. Exactly Fendler’s plant; but it ap¬ 
pears to differ from A. Nuttallii only in its greater rigidity, and the more manifest hispid 
bristles on the branches and the margin of the leaves. 
Aster (Oxytripolium) pauciflorus, Nutt.; Gray, PI. Wright. 2, p. 76. San Domingo, New 
Mexico ; October. 
Aster (Oxytripolium) divaricatus, Nutt.; Torr. & Gray, FI. 2, p. 162. Sand-banks of the 
Canadian ; August. 
Aster (Oxytripolium) angustus, Torr. & Gray, l. c.; Gray, PI. Wight. 2, p. 76. In wet 
springs, Eastern New Mexico. 
Diplopappus ericoides, Torr. & Gray, l. c. Laguna Colorado, New Mexico , September. 
Erigeron (Cagnotus) divaricatum, Miclix., FI. 2, p. 534. Dogtown prairies; September. 
Erigeron (Caenotus) subdecurrens. Conyza subdecurrens, Gray, PI. Fendl. p. 78. Plains 
and prairies, Eastern New Mexico ; September 21. 
Erigeron macranthum, Nutt.-, Gray, PI. Fendl. p. 67. Mountain arroyos, near San An¬ 
tonio, New Mexico. 
Erigeron Bellidiastrum, Nutt.; Torr. & Gray, FI. 2, p. 170. Sand-hills on the Upper 
Canadian ; September. 
Erigeron Philadelpiiicum, Linn. ; Torr. & Gray, FI. 2, p. 171. Near Santa Rosa, Benicia, 
and Cocomungo, California ; March-May. 
Erigeron divergens, Torr. & Gray, FI. 2, p. 175; Gray, PI. Wright. 2, p. 77, (nearly the 
var. cinereum.) Hills in the Butte mountains near Marysville, California ; May 25. The 
lower leaves are mostly lobed or almost divided, and the stems become lignescent at the base. 
Erigeron Douglasii, Torr. & Gray, l. c. Hill-sides on the Stanislaus river at Robinson’s 
Ferry, California. Mr. Thurber and others have gathered a very narrow-leaved state of this 
near San Diego. 
Erigeron modestum, Gray, PI. Fendl. p. 68, & PI. Lindl. 2, p. 220; excl. syn. DC. 
Rocky ravines on the Llano Estacado ; September. 
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