@. 
ae 
-Capitulum Sens Aowened, Involucrum su 
AND GENERA OF PLANTS. 431 
gated; stem very short, pedicels naked, scapoid, one-flowered; outer sepals 
rather shorter than the inner, somewhat smooth. 
Has. The plains of Oregon. An annual, from four or five inches to a foot high. Stem seapoid, 
‘smooth, both linear-lan- 
ceolate. Corolla pale yellow, externally purplish, very fugacionligl Out 
he whole plant nearly 
resembles M. pterocarpus, for which it might readily be mistaken. “ee 
hid among the leaves; outer series of sepals slightly pubescent, the inner 
aa pubescent achenia 
larger, purple, the inner straw-yellow, with smooth and shallower ribs. 
*CRYPTOPLEURA. 
“2 
REE ei, 
oe 
ulate, ee in a few 
series, the external shorter, pubescent and calieuliform. Receptacle naked. 
Liguli elongated. Achenium smooth, finesrSelong: compressed, obtuse, 
terminated by a very long ame betes BO inner series bearing ten 1 ee 
row, alated ribs; the outer serie: " 
obsolete lines; basilar are it p 
poid, sca 3 i, florets yellow, conspicuous, as in Thassos —(The name 
from nonchevks hidden, and a<vpa, a rib, the abe of the pectin achenia being 
obsolete or hidden.) ae = 
Cryptopleura Cali ifornica. : i 
Has. Near St. Barbara, in Upper California, A abou ‘thies to four ‘eich high; 
hirsute and nearly scapoid. Leaves linear-lanceolate, incinelye serrate. Involucrum in about t 
series, the outer resembling a caliculum, with the divisions ovate and acute, hirsute ; the two inner 
series nearly equal in length, I lanceolate, almost smooth. Rays five-toothed, exserted. Pappus 
softly pilose, white, very sle1 sr and scarcely hirsute ; the stipe twice as long as the achenium; 
all the achenia abrupt at the summit, straw white; those of the exterior series _ ee 
summit and inflated, so that the need is seen free in the testa: these are without 
almost without lines. ' i ac enia are compressed, and have ten narrow costed be a 
ribs, 
bling the true Jeaves. Liguli ae 
nd slenderly filiform. Re- 
