BOTANY. 175 
О. ANGUSTIFOLIUS, Sweet ; Choisy, l. c. (pro parte.) Colymenia angustifolia, Nutt. O. decum- 
bens, Nutt. Allionia linearis, Pursh, l. c. Folia linearia, sepius elongata, repanda, crassa, 
glaucescentia, cum caule 1-6 pedali glaberrima. Pedunculi et involucra pubescentia. Fructus 
cinereo-pubescens. Upper Missouri to the Rocky mountains, New Mexico, and Texas. No. 745, 6 
Fendler ; 606, 607, 1822, Wright. 1 
§ 2. Perigonium angustius infundibuliforme, най quadruplo longius. Anthocarpium FC 
clavato-oblongum, apiculatum, pubescens, inter costas validas profunde sulcatum. 
O. coccineus, Torr. ined. Species habitu precedentis, floribus et fructu distinctissimum. 
New Mexico, 
POLYGONACEZX. 
EnroGoNUM HIERACIFOLIUM, Benth. in DC. Prodr. 14, pars 1, p. 6. Hillsides, Kong the сайопв 
of Rio Grande, above the mouth of the Pecos; Parry. Western Texas, near the Rio Grande ; 
Wright, No. 616. A well-marked species, but allied to E. alatum, from which it is easily 
distinguished by the achenium being winged only above the middle, and not at all below. It 
is commonly about a foot and a half or two feet high. The sepals are nearly equal, and vary 
from yellowish to rose color. Pedicels articulated close to the flower. Bracteoles linear, 
glabrous. Embyro excentric and a little curved. E ! 
ERIOGONUM ALATUM, Torr. in Sitgreave Hep. p. 168, t. 8; Benth. l. c. Hills near the Copper 
Mines, New Mexico; also near Cruces, June—July ; Bigelow, Thurber, (No. 225.) Some of the 
specimens are more Ёс: four feet high. 
卫 RIOGONUM CILIATUM (Torr.; Benth. 1. c.): herbaceum, perenne ; callie nudo tereti sey А 
parce dichotomo-ramoso ; foliis radicalibus obovatis obtusis eum acumine brevissimo basi in pe- 
tiolum attenuatis supra Cuan subtus pilosiusculis margime ciliatis; pedunculis elongatis; in- 
volucris campanulatis 5-fidis ; perigoniis subcoriaceis semisexfidis, laciniis ovatis erectis, interi- 
oribus paullo longioribus angustioribusque ; achenio triquetro perigonio fructifero subæquali. 
Sandy soil near Buena Vista, Cohahuila, July; Dr. Edwards. Near Monterey, in the same 
State; Gregg. Root perennial; leaves in a subradical cluster from a short divided caudex, 14 to 
24 inches long (including the petiole) and six to ten lines wide. Stems, several from one root, | 
12-15 inches high, slender, two to three times forked, the terminal divisions bearing a solitary 
involucre which is about two lines in diameter. Flowers very numerous, the pedicels jointed 
close to the flower. Bracteoles narrowly linear, fringed 1 with long hairs. Perianth purple, 
of a coriaceous (or probably, in the living plant, of a fleshy) texture; the segments extending 
scarcely below the middle, rather obtuse; the entire base showing six obtuse ridges. Stamens 
included, six of them alternating with the segments, the other three opposite the inner segments 
and inserted considerably lower down ; filaments smooth. Ovary triangular ; styles жеу short. 
Achenium enclosed in the connivent perianth, triquetrous, smooth. Embryo incurved, excentric. 
On high plains near San Juan de la Vagueria, Dr. Gregg found an Eriogonum that seems to 
be a variety of this species, but it differs in the following characters: var. FOLIOSUM : caule 
scabriuseulo 2-3-chotome ramoso, axillis foliosis. Plant about a foot high, more branched than 
the preceding; the radical leaves smaller, less ciliate, and of a somewhat fleshy texture. Cauline ~ 
leaves about three quarters of an inch long; smooth. Peduncles one to one and a half inch 
long. Sepals united to the middle, closing around the fruit. 
ERIOGONUM LONGIFOLIUM, Nutt. in Trans. Amer. Phil. Soc. (n. ser.) 5, p. 164; Benth. l. c. 
Mountains and plains near Live Oak Creek, September ; Bigelow. 
