SPIRAEA. ROSACEA. 187 
‘LUETKEA,. 
unequally serrate toward the rounded or acutish apex, often cuneate at 
base, very shortly petioled, densely white-tomentose beneath, smooth 
above: flowers deep rose-color, densely crowded in a narrow usually 
elongated sessile leaty panicle; calyx campanulate, the ovate acute lobes 
as Jong as the tube, reflexed; petals obovate, narrowed at base to a short 
claw ; stamens twice as long as the petals; free edge of the disk obsolete or 
reduced to a mere ring: carpels glabrous, 9-1l-ovuled. Common in low 
grounds and swales, Brit. Columbia to California. 
S. Menziesii Hook. c. 173. Stems erect, 3-4feet high, with light 
brown bark: leaves obovate to elliptical. 1-3 inches long by 8-16 lines 
broad, coarsely and unequally serrate above the middle, glabrous and of 
nearly the same color both sides or paler beneath, narrowed below toa 
very short petiole: flowers rose-color, in a rather small somewhat pyra- 
midal obtuse panicle; calyx pubescent, the broadly ovate acute lobes as 
long as the broad shallow tube; petals ovate, a line long, exceeding the 
sepals; stamens more than twice as long as the petals; carpels glabrous. 
In cold marshes, Alaska to Oregon. 
S. cxspitosa Nutt. T. & G. Fl. i, 418. Cespitose, with simple or branch- 
ing scape-like stems: leaves rosulate on the short tufted branches of the 
prostrate and root-like stems, oblanceolate or linear-spatulate, acute silky 
on both sides, 2-12 lines long, those of the scape scattered and narrower : 
scapes 2-6 inches high; flowers white, in small oblong spiks 6-20 lines 
long; calyx-lobes silky, exceeding the tube and nearly equalling the spatu- 
late petals, not reflexed ; filaments twice as long as the petals; disk of the 
calyx-tube conspicuous, entire; carpels 3-5, villous or glabrate, 2-3- 
ovuled. On high shelving rocks, in the Cascade Mountains of svuthern 
Oregon to Arizona and the Rocky Mountains. 
19 LUETKEA Bong. Veg. Sit. 230, t. 2. 
ERIOGYNIA Hook. Fl. i, 255, te 88. 
Low, nearly herbaceous perennial plants with palmately cleft 
or entire leaves without stipules and scape-like stems terminated 
by a short spike or panicle of small white flowers. Flowers per- 
fect. Disk wholly coherent with the tube of the 5-cleft persistent 
calyx. Petals 5, rounded. Stamens numerous, perigynous. 
Carpels 4—6, membranaceous, becoming 2—valved. 4—seeded pods. 
Seeds small, attenuate at each end, with thin membranaceous 
testa and no albumen. 
L. sibbaldioides Bong. 1. c. Eriogynia pectinata Hook. Glabrous 
stems cespitose, creeping, very leafy, 1-2 inches long; flowering stems erect, 
2-6 inches high; leaves trifoliolate persistent; leaflets deeply 2-4-lobed,. 
usually 3-lobed, the lateral ones decurrent and forming a broad flat petiole : 
flowers rather large, white, in short terminal racemes; inflorescence more 
or less pubescent; pedicels stout, 1-2 lines long; calyx-lobes ovate, acute, 
equalling the tube; petals obovate, 1-2 lines long, exceeding the calyx; 
filaments united at base, shorter than the petals; carpels 3-5, villous along 
the inner suture. On the highest mountains near perpetual snow, Alaska 
to California and the Rocky Mountains. 
L. Hendersonii Canby, Greene Pitt. ii, 119. Stems cespitose, 1-2 inches 
long, very leafy: leaves spatulate, entire, the margin slightly involute, 
acutish, attenuate below to a broad petiole, 6-8 lines long, silky, pubescent, 
both sides coriaceous, persistent: flowers white, in oblong racemes that 
terminate the slender scapes; calyx almost rotate, the oblong obtuse lobes 
longer than the tube; petals oblong, 144 lines long, rounded at the apex; 
filaments distinct ; carpels 3-5, villousalong thesutures. ‘‘In rock crevices 
7000 feet altitude Mount Steele, Olympic Mountains Washington.’’ Piper. 
