PLANTA FENDLERIAN Bs 109 
baled an inch long, olay elabrate. above ; but still foctoss or white-woolly underneatli. 
Involucre 3 lines long. Rays 4 or 5 lines long-* ! : a 
* 
* Senecio Tampicanus, DC., is in Dr. Gregg’s collection, from a “ low valley of the Rio del Parral near 
Santa Rosalia.” It bears the marks of having been floccose at an early stage. — Nearly allied to this is 
SENEcIO MULTILOBATUS (Torr. §& Gray, Fl. ined) annuus seu biennis, citissime glaber, pedalis, multi- 
caulis; caulibus simplicibus apice corymbiferis; foliis subcarnosis, primariis spathulatis seepe indivisis, sequen- 
tibus omnibus pinnato-9-21-partitis, inferioribus longe petiolatis, summis sessilibus basi vix aut ne vix 
auriculatis, segmentis cuneato-oblongis apice inciso-dentatis vel 2—3-lobatis; corymbo denso polycephalo ; 
involucro fere ecalyculato 12— 14-phyllo; ligulis 5~6 oblongis; fl. disci 20-30; acheniis strigoso-puberu- 
lentis. — Abundant on the Uintah River, in the interior of California, Fremont (second expedition). — Var. 
8. foliis inferioribus magis interrupte pinnatisectis, pinnis majoribus lobatis. Monterey to San Gabriel, Coulter. 
— Heads as large as those of S. aureus. 
Another. unpublished Californian species, which was gathered by Fremont in his third expedition, is 
8. evrycernatus (Torr. § Gray, Fl. ined.): perennis? glabratus; caule pedali crasso simplici ; foliis 
sublyrato-pinnatipartitis inferioribus longe petiolatis summis sessilibus ; segmentis 7-11 oblongis cuneatisve 
apice incisis grosse et argute dentatis, infimis parvis, superioribus sensim majoribus confluentibus ; capitulis 
magnis 7—9 in corymbum laxum digestis longe pedunculatis; involucro late campanulato parce calyculato 
circiter 24-phyllo multifloro ; ligulis 10-12 elongatis ; acheniis glaberrimis. — California, Fremont; also 
Hartweg.— Radical leaves somewhat bipinnatifid, the lowest cauline on petioles of from two to four inches 
long and exceeding the lyrate lamina, the upper lobes all confluent; the suoraasing quline leaves less lyrate, 
and with more numerous segments, which are about half an inch long, cut into coarse and pointed teeth. 
Involucre half an inch in diameter. Rays over half an inch long. Pappus very copious. 
At Llanos, Dr. Wislizenus gathered a perfectly glabrate form of S. Hartwegi, Benth. The achenia are. 
entirely glabrous, and the stem herbaceous. 
On account of its opposite leaves, its involucre of only four or five broad scales, and nae scanty pappus, 
the following plant of Dr. Gregg’s collection appears to constitute a distinct genus, viz. : —, 
HAPLOESTHES, Nov. Gen. 
Capitulum ; = multiflorum, heterogamum ; fl. radii 4-5 ligulatis, foemineis; disci tubulosis herma- 
phroditis. Involucrum uniseriale, e squamis 5 late ovalibus plurinerviis constans, ecalyculatum. Receptacu- 
lum convexum nudum. Ligulz late ovales. Corolle fl. disci 5-dentate, sub 10-nervie, nervis accessoriis ad 
medium loborum directis. Anthere, styli, et achenia (immatura) omnino Senecionis. Pappus uniserialis, | 
e setis capillaribus tenuissimis vix 20, corolla disci paulo brevioribus. — Herba glaberrima, ramosa, gracilis ; 
foliis oppositis filiformibus integerrimis; capitulis parvulis laxe corymbosis; fioribus flavis. 
H. Greco. — Valley near Ciefiega Grande, Coahuila, Dr. Gregg ; May.— Plant 2 feet high, erect, 
with a terete stem and branches, leafy. Root unknown. Leaves all opposite, one or two inches long. 
Corymb naked. Peduncles slender. Involucre herbaceous, slightly yellowish, two or three lines in diameter. 
Rays broadly oval, scarcely two lines long, 7-nerved. The accessory or median nerves of the disk-corolla 
are as strong as the others, but are nearly wanting in one or two of the lobes. “Immature achenia terete, 
glabrous. Pappus of 15 or 20 minutely scabrous capillary bristles. 
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