the flowers all tubular and perfect. Involucre of 15 to 16 oblong ob- 
tuse coriaceo-chartaceous scales which are slightly concave but not 
carinate. Receptacle naked. Corolla with rather slender tube; 
the lobes short, ovate, erect, furnished with long villous hairs ex- 
ternally. Anthers included. Branches of the style tipped with a 
very short obtuse pubescent cone. Achenia oblong-turbinate, vil- 
lous with short hairs. Pappus of numerous, somewhat rigid, den- 
ticulate bristles. A suffrutescent prostrate much branched plant, 
canescently and’ densely tomentose; the leaves broadly obovate, 
‘toothed, narrowed into a petiole. Heads on short peduncles, ter- 
minating the somewhat corymbose branches. , 
T. (Polydymia) ramosissima, n. sp. Hills bordering the Gila. 
Stem spreading, with very numerous matted branches. Leaves 
about three-fourths of an inch in length, the lamina broader than 
long, with 5-7 indistinct rounded teeth, abruptly narrowed into a 
longish petiole. Heads about one-third of an inch in diameter, 
ovate. Involucral scales in several series, the exterior ones 
shorter than the interior. Hairs of the achenium smooth, slightly 
bifid at thesummit. Pappus longerthan the achenium. This plant 
is clearly allied to Tetradymia, but differs in the many-flowered 
heads, numerous scales of the involucre, slightly cleft corolla- 
tube, and in several other characters; so that it should perhaps” 
form the type of a distinct genus. ; 
Cirsium undulatum, Spreng. The locality of this plant is not 
recorded, but it was probably found on the upper part of the 
Arkansas. x sg 
Stephanomeria paniculata, Vutt.. Ascending the Cordilleras of 
California : 
Malgedium pulchellum} Nutt. ‘Pawnee Fork of the Arkansas. 
ERICACE®. 
retostaphylos pungens, Kunth.? Valley of the Gila and San 
iego. Flowers in January. ise. 
A. tomentosa, Dougl.? A-shrub 4 to 5 feet high. Cordilleras- 
of California. This may be a smooth variety of Douglas’s plant. 
The leaves are orbicular-ovate, obtuse or truncate at the base, 
labrous on both sides, with the petiole one-third the length of the 
amina. It was not found in flower. 
an lantas 1. . Rie oD? Alliédsto | P. aphaloides; Nutt. 
: - ae of the’ Colorado, near tle! Cordilieons of Califo 
e whole plant is clothed with a loose white tomentum 
tly deciduous with age. The leaves are linear-] 
e, and taper to a long narrow base. The pedunc 
1 ey mes | nN g : 
‘5 ong ve 
olla ovate. Capsule 2 seeded. 
10 
- PLANTAGINACEE. — 
