Blake — A Revision of the Genus Viguiera 93 
almost unbelievable. Yet through the whole series just discussed 
the chief features of involucre, inflorescence, and what may be 
termed the ground plan of the leaves remain essentially the same. 
The following species, V. microphylla (fig. 1) is so close to V. 
deltoidea var. chenopodina that it is possible that further collec- 
tions will succeed in bridging the gap between them. 
40. V. micropHYLLA Vasey & Rose. Frutescent, about 0.6 m. 
high, the stem apparently ascending, clothed with a grayish 
glabrate bark, slender; branches canescently strigillose, bearing 
2-4 heads at the end of long nearly naked peduncles. Leaves 
alternate, ovate, obtuse to acute, cuneate to truncate at base, en- 
tire, 3-nerved, canescently strigillose both sides, 8-12 mm. long, 
5-8 mm. wide, the upper smaller; petioles canescently strigillose, 
2.5-3 mm. long. Pedicels 0.7-6 em. long; heads 1.5 em. wide; 
disk 7-10.5 mm. high, 8-12 mm. thick. Involucre 2-seriate, 
searcely graduated, 3-4 mm. high, the phyllaries canescently 
strigillose, with ovate or oblong base and narrowed callose- 
mucronulate herbaceous apex. Rays about 10, oval, 5 mm. long, 
3 mm. wide; disk-corollas slightly pubescent, 4 mm. long (tube 
0.9 mm.). Pales blackish above, yellowish-margined, the inner 
with abruptly acute erose more or less spreading or reflexed tip, 
pubescent and gland-dotted, 6.5 mm. long. Achenes silky-pilose, 
4mm. long. Awns somewhat easily deciduous, 2 mm. long; squa- 
mellae about 4, fimbriate-denticulate, united, 1.3 mm. long. — 
Vasey & Rose, Proc. U. S. Nat. Mus. xi. 535 (1890). — LOWER 
CALIFORNIA: 64 km. back from coast, Lagoon Head, 6-15 
March 1889, Palmer 802 and 882 (G., K., U. S.); arroyos, Calmalli, 
270-315 m., Jan.—March 1898, Purpus 47 (K.). — Vasey & Rose’s 
type (Palmer 270) came from the same locality as Palmer 802 (or 
882). — T. 1. Fie. 1. 
41. V. anata (Kellogg) Gray. Stems solitary or few, erect, 
about 3.5-5.5 dm. high, from a frutescent base, branched only in 
inflorescence, purplish-brown beneath the pannose-lanate 
tomentum, in age glabrate above. Leaves opposite, rather few, 
somewhat crowded at base of the stem of the year, oval or orbie- 
ular-ovate, broadly rounded at apex, at base truncate or abruptly 
contracted into a short cuneate base, crenate-dentate with few 
teeth or subentire, densely white- or grayish-lanate-pannose both 
sides, somewhat venose-reticulated, 2.5-5.5 em. long, 2.3-4.5 cm. 
