CRASSULACEAE (STONECROP FAMILY) 117 



nearly so. Stamens 4-20. Ovary free, globose or ovoid, 7-5- 

 celled; styles 1-5, simple to 2-parted. Capsule many-seeded. 

 Only the following genus. 



DROSERA (SUNDEW) 



Plants of peat bogs, often reddish. Leaves with glandular- hairs which 

 hold insects. Flowers in scapose racemes. (Gk. droseros = dewy ; 

 the leaf glands exude drops of clear liquid.) 



A. Leaf blade not longer than wide, orbicular or transversely elliptic. W. E. 



D. rotundifolia (ROUND-LEAVED SUNDEW) 

 AA. Leaf blade much longer than wide, linear to obovate-spatulate. C. 



D. anglica (LONG-LEAVED SUNDEW) 



CRASSULACEAE (STONECROP FAMILY) 



Herbs, mostly fleshy. Leaves alternate or opposite, fleshy; 

 stipules none. Flowers cymose, or rarely racemose or solitary, 

 regular. Calyx persistent, mostly 4~5-parted or -lobed. Petals 

 o or 4 or 5, distinct or somewhat united. Stamens as many or 

 twice as many as the petals. Carpels 4-5, superior, distinct or 

 united below. Fruit a follicle, i -celled, opening along the inner 

 edge. Seeds minute, i to many, in 2 rows. 



A. Leaves opposite. 



B. Flowers solitary in the leaf axils; leaves 2-6 mm. long; petals greenish, not 

 over 2 mm. long. TILLAEASTRUM (p. 117) 



BB. Flowers clustered in the leaf axils; leaves 1.5-3 mm. long; petals greenish, 

 about i mm. long. U. C. (Honor of M. A. Tilli, an Italian botanist.) 



Tillaea erecta (PIGMY WEED) 



BBB. Flowers in terminal cymes; leaves 5-8 mm. long; petals yellow, about 6 mm. 

 long. SEDUM (p. 118) 



AA. Leaves alternate. 



C. Petals more or less united. 



D. Corolla tubular, yellow, its lobes erect; basal leaves acute. U. (Honor of 

 W. R. Dudley, an American botanist.) Dudleya farinosa 



DD. Corolla short-campanulate or rotate, yellow or red, its lobes spreading; 



basal leaves obtuse. GORMANIA (p. 118) 



CC. Petals distinct. SEDUM (p. 118) 



TILLAEASTRUM (PIGMY WEED) 



Annual, glabrous, small or minute ; sometimes aquatic. Leaves oppo- 

 site, entire. Sepals mostly 4, distinct. Petals distinct or united at base. 

 Carpels distinct. (Possibly Tillaea; + L. aster = a contemptuous dimin- 

 utive suffix; from their lack of beauty.) 



A. Leaves obtuse; flowers sessile or nearly so. E. T. aquaticum 



AA. Leaves acute; with pedicels at least equal to the calyx. E. T. drummondii 



