432 DESCRIPTIONS OF NEW SPECIES 
ceptacle naked. Achenia smooth, linear-lanceolate, somewhat compressed, 
sharply ten-ribbed ; the outer series abortive, tabescent; the apex attenuated 
into a filiform rostrum about twice its length, the base with a callous cica- 
trice. Pappus short and white, of slender subscabrous hairs.—Perennials 
with long tap-roots and laciniated, incise or pinnatifid leaves. Stems scapoid, 
naked or bracteolate; the involucrum large, subtended at base by numerous 
large, and usually dissimilar bractes. Flowers yellow. Nearly allied to 
Macrorhynchus, but of a different habit, with conspicuous flowers; an abor- 
tive, external series, an involucrum of many leaves, and an achenium merely 
‘ribbed —(The name alludes to the long stipe of the pappus.) ae 
§. 1. Caliculum of many series, wholly leafy, dissimilar to the involucrum, which 
ts hemaspherical. 
se ne * grandiflorus; nearly smooth, except the base of the stem, which 
is lanuginous; leaves lyrately pinnatifid, the terminal segment large and “ob- 
ee scape robust and ste bracteolate ; involucrum ae 
b late and s smooth. 
h roe of the Wahine eve stout species, the ceapitulum larger than that of the 
Dandelion, containing very many flowers. Scape twelve to fourteen inches high, nearly as thick 
as a goose-quill, grooved. Leaves eight or nine inches long, very irregularly divided, attenuated 
into long petioles. The flower not seen. An external _row of abortive achenia, nearly without 
striatures, and smooth; fertile achenium linear-lanceolate, narrow and acutely ten-ribbed, pale brown, 
the filiform stipe more than twice its length. Leaves often pubescent beneath, the inner surface of 
the broad leaves of the caliculum tomentose. 
eM 
a rea oS 
én Tn olucr 
campanulate; divisions of the involucrum similar, the outer 
leafy and somewhat squarrose. —TroxIMerta, 
Stylopappus * laciniatus; smooth. or pubescent; leaves very irregularly and 
often deeply pinnatifid, the segments long and linear; scape naked : _ smooth ; 
involucrum campanulate; leaves of the caliculum lanceolate, somewhat squar- 
rose; stipe — than twice the length of the achenium, slenderly filiform. @. 
long ifolius; more pubescent, leaves very ong and deeply divided; the calicu- 
lami leaf-like, longer wae the be ae spreading, sometimes proliferous: 
- into true leaves. : re 
