8PIRJEA. 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 leafy panicle ; calyx campanulate, the ovate acute lobes 

 as long 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, 9-11-ovuled. Common in low 

 grounds and swales, Brit. Columbia to California. 



S. Menziesii Hook 1. c. 173. Stems erect, 3-4 feet 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 to a 

 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. caespitosa 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 fcuuthern 

 Oregon to Arizona and the Rocky Mountains. 



19 LUETKEA Bong. Veg. Sit. 230, t. 2. 



ER10GYNIA Hook. Ft. i, 255, U 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 w T holly 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 Eocky 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, 6-3 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, \% lines long, rounded at the apex ; 

 filaments distinct ; carpels 3-5, villous along the sutures. "In rock crevices 

 7000 feet altitude Mount Steele, Olympic Mountains Washington." Piper. 



