eee a 
Primulaceae 301 
DD. Plants of cultivated ground, annual; stem 4-sided, much branched; flowers 
scarlet; petals present. ANAGALLIS (p. 303) 
BB. Leaves petiolate; flowers yellow. STEIRONEMA (p. 302) 
AA. * Leaves either alternate or else in a basal or terminal tuft or whorl. 
E. Leaves in a basal rosette. 
F. Corolla rotate, 5-parted; stamens often united into a cone about the pistil. 
DoDECATHEON (p. 303) 
FF. Corolla salverform or funnelform, 5-lobed; stamens not united. 
G. Corolla-tube equaling or exceeding the calyx; plant perennial. 
H. Capsule many-seeded; stamens exserted. PRIMULA (p. 301) 
PIP “Cupsule’ |—2‘seeded: stamens included. Douc asia (p. 301) 
GG. Corolla-tube shorter than the calyx; plant annual. ANDROSACE (p. 301) 
EF. Leaves not all in a basal rosette, scattered along the stem or in a terminal whorl. 
I. Leaves or most of them 25 mm. or more long; flowers either not sessile or not 
solitary in the axils. 
J. Flowers few, terminal, not in racemes; stem simple; ovary superior; leaves 
tending to be in a terminal whorl; seeds few. TRIENTALIS (p. 302) 
JJ. Flowers many, in terminal panicled racemes; stem diffusely branched; ovary 
inferior ; leaves all scattered along the stem; seeds many. SAMOLUS (p. 302) 
II. Leaves 4—6 mm. long; flowers sessile, solitary in the axils. 
CENTUNCULUS (p. 303) 
PRIMULA PRIMROSE 
Perennial, scapose. Leaves all basal. Flowers large or small, in umbels or in in- 
volucrate or bracted racemes or whorls on a scape. Calyx tubular or funnelform or 
campanulate, persistent, often angled, 5-lobed. Corolla funnelform or salverform; tube 
equaling or exceeding the calyx. Stamens distinct. Capsule 5-valved at the summit. 
Seeds many, peltate. (Diminutive of L. primus—first; because some blossom in early 
spring.) E. (Apparently P. broadheadae.) 
P. cusickiana Gray 
DOUGLASIA 
Perennial, depressed, tufted, small; stems somewhat woody, persistent. Leaves im- 
bricated or crowded. Flowers solitary or somewhat umbellate, small. Calyx campanu- 
late, 5-lobed, persistent. Corolla-tube equaling or exceeding the calyx, somewhat in- 
flated above, its throat somewhat contracted and 5-arched beneath the sinuses. Sta- 
mens included, distinct. Ovary 5-ovuled. Capsule turbinate, |—2-seeded. (Honor 
of D. Douglas, a Scotch botanist and collector in our region.) 
A. Leaves cdnescent with forked hairs, 8—12 mm. long. C. E. 
D. dentata Wats. 
AA. Leaves glabrous or nearly so, 4—6 mm. long. W. C. 
D. laevigata Gray 
ANDROSACE 
Annual (ours) or perennial, small. Leaves basal, tufted. Flowers small, white or 
pink. Calyx persistent, 5-lobed or -parted. Corolla salverform or funnelform: tube 
short, not exceeding the calyx. Stamens included, distinct. Capsule short, 5-valved from 
the apex. Seeds few to many. (Gk. andros==a man, sakos=a buckler or shield; prob- 
ably referring to the form of the leaves.) 
