Portulacaceae 151 
(Claytonia perfoliata; Claytonia perfoliata implectans.) 
M. perfoliata How. 
JJ. Calyx 2 mm. long; seed | mm. wide ; pedicels in fruit 2—6 times as long 
as the calyx; basal leaves various. 
K. Basal leaves spatulate to filiform-linear: inflorescence usually a loose 
raceme. W.C. E. (Clavtonia parviflora.) 
M. parviflora How. 
KK. Basal leaves ovate to rhomboidal; inflorescence a head or umbel, ses- 
sile in the disk of stem-leaves. W. E. (M. rubra; M. humifusa; Clay- 
toma parviflora depressa.) 
M. parviflora depressa Rob. 
BB. Stem-leaves several pairs, not united. 
L. Plant perennial, with filiform runners; petals 6 mm. long, pale rose-color; 
leaves 2550 mm. long including the petiole. W. E. (Claytonia chamissonis.) 
M. chamissonis Gr. (Toad-lily) ° 
LL. Plant annual, without runners; petals 2 mm. long, white; leaves 1.5—-13 mm. 
long including the petiole. W.E. (M. minor; M. hallii.) 
M. fontana L. (Blinks) 
AA. Stem-leaves alternate. 
M. Annual, without stolons; leaves not very fleshy: petals 5 mm. long or shorter; 
sepals 4 mm. long or shorter, a little shorter than the petals. . 
N. Leaves narrow, sessile, clasping at base; stamens 2-5: seed quite smooth. 
O. Leaves linear, |2—-75 mm. long; petals 5. 
P. Leaves 2.57.5 cm. long; racemes dense; sepals about 4 mm. long; 
petals 4—5 mm. long; seed about 2 mm. wide. W. E. (Claytonia 
linearis. ) M. linearis Gr. 
PP. Leaves 1.2—2.5 cm. long; racemes loose; sepals about 2 mm. long; 
petals 2-3 mm. long; seed less than | mm. wide. W. E. (Claytonia 
dichotoma. ) M. dichotoma How. 
OO. Leaves spatulate, 4—8 mm. long; petals 0 or 2 or 3 or 5, 2 mm. or 
less long; seed | mm. wide. W. (Claytonia Howellii.) 
H. howellii Wats. 
NN. Leaves wide, petioled, not clasping at base; stamens 5; seed closely striate. 
W. (Clavtonia diffusa.) , 
M. diffusa Gr. 
MM. Perennial, with slender stolons; leaves very fleshy; petals 8—10 mm. long; 
sepals about 2 mm. long. W.C. E. (Clavtonia parvifolia.) 
M. parvifolia Gr. (Spraddles) 

PORTULACA PURSLANE 
Annual, glabrous (ours) or pubescent, fleshy; stems prostrate (ours) to diffuse. 
Leaves alternate (ours) or opposite; stipules scarious or setaceous. Flowers terminal, 
yellow (ours). Sepals 2, united at base. Pistils 46, mostly 5, on the calyx, fugacious. 
Stamens 7 to many, on the calyx. Ovary many-ovuled, partly inferior; style deeply 39- 
cleft or -parted. Capsule membranous, dehiscent by a lid. Seeds many. (Said to be 
from L. porto=I carry, lacca—yjuice; the plants are fleshy.) E. 
P. oleracea L. 
LEWISIA. (Oreobroma) BITTER-ROOT 
Perennial, stemless or nearly so except for the scapes; caudex and root thick, fleshy, 
perpendicular. Flowers on 1|-flowered scapes or in panicles with scapose stalks, conspic- 
o ; 
