298 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
LOPEZIA.% 
A review of the names of 33 species of Lopezia has consumed a 
large amount of time. Some of the results obtained have been very 
gratifying, while others have been most discouraging. Of these species 
only a few, in fact only four, have been described during the last fifty 
years. Most of them have been very briefly characterized and they 
have often been misunderstood. The material in our large herbaria is 
much confused. 
Lopezia elegans Rose sp. nov. FIGuRE 40. 
Annual, about 40 cm. high, very much branched throughout, with very scanty 
short pubescence; 
leaves thin, lanceo- 
ff late, the lower ones 
long-petioled, gla- 
i brous; fruiting pedi- 
V/ cels slender, 10 to 12 
SS Mi = 6 mm. long, puberu- 
hSSS ) c lent; flower buds ob- 
7 ——— — = tuse, glabrous; sepals 
“a a l a — dark purple; petals 
~~ I SS violet-purple, the two 
lower 6 mm. long, the 
Vi blade nearly orbicu- 
Fie, 40,—Flower and flower parts of Lopezia elegans. a, Flower: b, petal lar, the two upper 
with basal gland; ¢,stamen. Seale 2, linear-oblong, not ap- 
pendaged, each bear- 
ing asingle gland at the top of the spur; sterile stamen bright crimson, deeply notched. 
ollected by Dr. KE. Palmer near Alvarez, San Luis Potosf, September 28 to Oeto- 
ber 3, 1902 (no, 159). 
Type U. 8, National Herbarium no. 397706. 
Lopezia glandulosa Rose, sp. nov. Fraure 41. 
Annual, about 40 em. high, branehing from the base; branches ascending, slender, 
with scanty pubescence 
below and with glandn- 
lar hairs on the upper 
parts as well as on the 
pedicels; leaves opposite 
below, alternate above, 
lanceolate, obtuse, short- 
petioled, glabrate; pedi- 
cels 10 mm. or less long, 
glandular-pubescent; 
flower buds obtuse, gla- 
brous; sepals dark red; 
petals purplish, the two 
lower spatulate, tapering 
gradually into the slen- 
der claw, 5 to 6 mm. long, 
the two upper linear-oblong, not appendaged, each bearing one gland at the top of 
the claw; sterile stamen deep purple; capsule globular, glabrous, 
Fig. 4t.—Flower and flower parts of Lopezia glandulosa. a, Flower; 
b, side view of petal with gland; ¢, d, stamens; ¢, style. Seale 2. 
“Lopezia Cav. Ie. 1: 12 pl. 78. 1791. Type species Lopezia racemosa. 
