72 Contributions from the Gray Herbarium 
Soc. Nat. Hist. xxix. 100 (1899). Muicrocephalum sericeum Sch. 
Bip. ex Klatt, 1. c., as syn. — MEXICO: Pursia: Esperanza, 
Oct. 1911, Purpus 5615 (G.). Mexico without definite locality: 
LIiebmann 609 (TYPE couu.: drawing and fragm. G.). — The name 
has been changed to obviate confusion with V. sericea (DC.) Gray, 
a name long valid for a species now to be referred to Syncretocarpus. 
Purpus’s plant was distributed as Encelia hypargyrea Rob. & 
Greenm. (= V. grammatoglossa DC.). 
7 27. V.corpiroiia Gray. Stems usually several, herbaceous and 
~ erect from a deep and thick napiform root (as much as 3 dm. long 
by 3 cm. in diameter), tuberculate-hispid with persistent-based 
hairs and finely granular, about 1 m. high. Leaves mostly opposite 
or sometimes mostly alternate, ovate to deltoid-ovate, or the upper 
lanceolate, acute to acuminate, mucronate, from rounded or cune- 
ate-rounded to shallowly cordate at base, obscurely or rather 
sharply serrate or the upper entire, green and very rough both 
sides, above tuberculate-hispidulous with incurved hairs and 
glandular-granular, beneath more or less hispid or hispidulous (the 
hairs often tuberculate-based) and glandular-granular, 3-nerved, 
rather veiny, 2-10 cm. long, 1.3-6.8 em. wide, on petioles 1-8 mm. 
long. Heads usually numerous, panicled at ends of stem and 
branches, 2.5-4.5 cm. wide, on peduncles 1.3-14.3 em. long; disk 
11-15 mm. high, 11-18 mm. thick. Involucre 3—4-serlate, gradu- 
ated, 7.5-15 mm. high, the phyllaries varying in shape from lance- 
subulate and attenuate to narrowly oblong or subspatulate- 
oblong and obtuse, usually mucronate, in texture from herbaceous 
or subherbaceous throughout to strongly indurated (except the 
herbaceous apex) and costate-vittate, tuberculate-hispid on margin 
and midline, sometimes also on back, and densely tuberculate- 
granulose. Rays 6-8, oblong to oval, 9-19 mm. long, 3.5-9 mm. 
wide; disk-corollas minutely puberulous below and on the teeth, 
gland-dotted, 6 mm. long (tube 1-1.5 mm.). Pales acuminate, 
cuspidate, 8-10.5 mm. long. Achenes appressed-pilose, 6.5 mm. 
long. Awns 5.5 mm. long; squamellae 4-6, united below or dis- 
tinct, 0.8-2 mm. long. — Gray! Pl. Wright. i. 107 (1852), ii. 88 
($853); Syn. Fl. i. pt. 2. 270 (1884). — Divisible on. characters 
of involucre into two varieties, appearing in their extremes like 
members of two different series, but completely connected by a 
number of intergradient specimens. sit 
