436 , PRIMULACEZ TRIENTALIS 
STEIRONEMA 
§ § Leafy-stemmed. Leaves entire. Corolla rotate or somewhat 
so; the divisions convolute or sometimes involute in the bud, wanting 
in Glaua. 
* Capsule mostly globose, dehiscent longitudi wally oy valves or 
wrregularly, | 
5 TRIENTALIS L. Gen. n. 461 
Low and glabrous perennial herbs with a simple stem, simple 
leaves mostly clus-ered at the summit and white or pink flowers. 
on filiform pedicels. Flowers 5+7-merous, usually 6-merous. 
Corolla completely rotate. without a tube, deeply parted, the divi- 
sions convolute in the bud. Filaments long and slender, united 
at base into a short ring: anthers linear, recurving -when old. 
Style filiform. Capsule about 5-valved. Seeds few, rather large, 
covered with a white cellular-reticulated pellicle, remaining for 
some time fast on the placenta in a globular mass. 
T. latifolia Hook. Fl. ii, 121. Stem slender, 2-6 inches high ,from 
a small subterranean tuber: bracts subulate to lanceolate: leaves from 
lanceolate to ovate, usually abruptly acuminate, 1-3 inches long, narrowed 
below to a short petiole: pedicels filitorm shorter than the leaves: calyx- 
lobes linear-lanceolate, acute or acuminate: corolla-lobes lanceolate, acu- 
minate one third longer than the calyx. Common in forests, California to 
Vancouver Island. 
T. arctica Fischer in Hook. 1. c. JT. Europxa var. arctica Ledeb. 
Stem very slender, 1-4 inches high, with small scattered obovate leaves 
below; upper leaves obovate-lanceolate to lanceolate, (-12 lines long: ped- 
icels filiform, longer than the leaves: lobes of the calyx linear, very acute, 
2-3 lines long: lobes of the corolla lanceolate, acuminate and tipped with 
a slender bristle, nearly twice as long as the calyx. Inhigh mountain 
marshes and along tne coast, Oregon to Alaska and Behring Straits. 
6 STEIRONEMA Raf. Ann, Gen. Phys. vii, 192. 
Leafy-stemmed perennial herbs with opposite or verticillate 
simple leaves and axillary yellow flowers nodding on slender 
pedicles. Flowers 5-merous. Corolla rotate with no proper tube, 
deeply 5-parted, the sinuses rounded; the divisions ovate, cuspi- 
date-pointed, each separately involute or convolute around its 
stamen. Stamens 5, alternating with 5 sterile filaments; distinct 
or nearly so, inserted on aring at the base of the corolla. Capsule 
10-20-seeded. 7 
S. ciliatum Raf. 1. c. Glabrous throughout except the petioles: stems 
erect, 2-4 feet high, mostly simple: leaves ovate-lanceolate to oblong- ovate, 
gradually acuminate, 2-5 inches long, mostly with rounded or subcordate 
base, minutely ciliate, membranaceous, pinnately veined; their long peti- 
oles hirsutely ciliate: calyx-lobes linear-lanceolate, acuminate : lobes of the 
corolla obovate, obtuse, nearly twice as-long as the calyx, erose-denticulate, 
4-6 lines long: capsule longer than the calyx. Low grounds, Oregon to 
Brit. Columbia and across the Continent. 
S. levigatum. Stems slender, 1-3 feet high, white and smooth, pan- 
iculately branched above: leaves lanceolate to linear-lanceolate, all petio 
