92 PORTULACACE. OREOBROMA. 
long oblanceolate, deep rose-color with orange stripe in the centre: stam- 
ens about 7, filaments dilated below, coherent in a tube around the 2-4- 
parted style capsule obscurely 2-4 valved, 12-20 ovuled. On high 
exposed peaks of syenitic rock near Preston’s peak, Siskiyou Mountains. 
0. Howellii Howelll.c. Calandrinia Howellii Watson l.c. xxiii, 262. 
Leaves flat, oblong to ovate, attenuate to a margined petiole, 5-7 lines 
wide, with narrow hyaline crisped margins: stems 4-6 inches high with 
one or two pairs of bracts below the short racemose cymes: sepals 149-2 
lines long, orbicular to broadly ovate: petals 7-10, oblong-oblanceolate, 
emarginate or entire, 6-8 lines long, deep rose-color, stamens 7. On high 
exposed ridges, Josephine county, southwestern Oregon. 
* * Long thick root branching below: the 2-3-divided caudex not 
reaching the surface of the ground: nerves of the calyx excurrent, but 
not gland-tipped: stems terminating in a few-flowered umbel. 
0. oppositifolia Howell l.c. Calandrinia oppositifolia Watson. Radical 
leaves linear-oblanceolate, attenuate to the scarious-margined subterra- 
nean base 144-8 inches long: the lower cauline 1-3 pairs, opposite and 
similar with occasionally scattered entire bracts above: stems 5-10 inches 
high bearing a terminal 1-5 flowered umbel: flowers white or pale 
pink on elongated pedicels 1-3 inches long: sepals orbicular, 2-3 lines 
long: petals 10, 6-10 lines lcng: stamens 8-12 or more: style deeply 3- 
cleft: capsule oblong, 3 lines long, 5-10-seeded. On wet hillsides about 
Waldo, Josephine county, Oregon, flowering in April and May. 
0. Tweedyi Howell l.c. Calandrinia Tweedyi Gray Proc. Am. Acad. 
xxii, 277. Caudex and root very thick: leaves obovate fleshy 2-4 inches 
long, an inch or two wide, scapes a little longer than the leaves 1-3 flow- 
ered: sepals and bracts entire, the former orbicular: petals an inch long: 
stamens 10-11: capsule 20-30-seeded: seeds with a large and loose orbicu- 
lar arillus. Wenatchee Mountains, Washington, alpine. 
* * * Root fusiform or conical; wholly underground: scapes 1-3- 
flowered, not surpassing the radical leaves. 
0. pygmea Howell l.-¢c. 33. Talinum pygmxum Gray Sillim. Journ. 
vaviii, 407. Leaves narrowly lanceolate or linear 1-2 inches long, with 
broad scarious margined underground petioles: bracts scarious glandular- 
ciliate: sepals orbicular, glandular-dentate 2 lines long: petals red, 
about twice the length of the sepals: capsule obtuse, nearly equalling the 
calyx, 16-20-seeded. On Mount Adams, Washington to the Rocky Mount- 
atins, Nevada and California. 
0. Nevadensis Howell |. c. Calandrinia Nevadensis Gray Leaves 
linear 2-4 inches long by a line or two wide, the underground portion di- 
lated, scapes 1-3 inches high with a pair of folthcsoid Tevekt bracts near 
the middle 1-3 flowered: sepals ovoid, more or less apiculate entire, 3-4 
lines long: petals 8-10, white, twice as long as the sepals: capsule ellip- 
tical, a little longer than the calyx: ovules 3-50. et alpine meadows 
and rivulets, Washington to California and Nevada. 
* * * * Root glandular, comparatively deep-seated: radical leaves 
few or none: scape-like stems with a pair (or sometimes 3 or 4 ina 
bieicea opposite fleshy linear leaves near the middle: several- 
owered. 
0. triphylla Howell 1. c. Claytonia triphylla Watson 1. c. x, 346. 
Stems 1-3 inches high: radical leaves, when present, narrowly lanceolate 
to linear 6-12 lines long; cauline 1-4 ina whorl narrowly lanceolate at- 
tenuate below : 1-2 inches long. inflorescence a several-flowered bracteate 
umbel: bracts minute: petals oblong, 2 lines long exceeding the rounded 
sepals. In wet places on high mountains, California to Brit. Columbia. 
