ROSACEOUS GENERA, 245 
PSYCHROBATIA. Slender and subalpine herbs, prostrate, 
rooting at the nodes. Leaves pedately compound, with foliaceous 
stipules. Flowers white, solitary on long filiform peduncles: 
Calyx of 5 nearly distinct sepals often toothed near the summit, 
as also the petals. Pistils very few, only two carpels maturing, 
becoming a pair of large glabrous red drupelets too weighty for 
their delicate peduncle and lying on the ground. Pyrenes 
sparingly wrinkled, not reticulate. 
P. PEDATA. Smith, under Rubus. 
CoMAROBATIA. A prostrate unarmed undershrub, sometimes 
rooting at the nodes. Leaves simple, 3-lobed, or now and then 
quite divided into 3 leaflets. Peduncles erect in both flower and 
fruit, 1-3-flowered. Sepals ovate, entire, acuminate or cuspi- 
date, unequal. Petals broad and obtuse, white. Pistils very 
few ; ovaries silky-tomentulose, several maturing to large 
villous drupelets. Pyrenes lightly wrinkled. 
C. Lastococca. Gray, under Rubus. 
CHAMAEMORUS, Clusius, Hist. 118 (1601.) Unarmed, 
mainly herbaceous low upright perennials. Leaves simple, 
stipules large, oval. Flower solitary, terminal: calyx 5-parted 
almost to the base; sepals erect, partly covering the fruit; this 
of few large very juicy drupelets adhering to their receptacle. 
Pyrenes large, smooth. 
C. ANGLICA, Clusius, Le 
C. NorwEGIca, Clusius, l. c., 119. 
LEAFLETS OF BOTANICAL OBSERVATION AND Criticism, Vol. I, pp. 
245-247. 17 Oct., 1906. 
