, @& Green plants with proper leaves 
10 Stamens mostly 10, sometimes 8, opening 
by terminal pores; shruts, sometimes 
/ (sna and prostrate; flowers regular, i 
urn-shaped or saucershapedy, Hricaceae (>, i 
/O Stamens not opening by termina) pores; 
/4 herbs with irregular flowers 
/‘2 Stamens 10 Leguminosae 
/2) Stamens 6 Fumariaceae (p. 
G@ Stamens numerous, united into a colum 
surrounding the styles and united to the 
10 (io of the corolla which covers the ovary Malvaceae (p. 
4 Nb. Stamens as many as the corolla lobes or fewer 
G Stamens opposite the corolla lobes Primulaceae 
& Stamens alternate with the corolla lobes or 
/o fewer, | : 
8 Aquatic herbs with finely dissected 
im leaves bearing small bladders which serve q 
a 2,28 floats; flowers solitary on naked 4 
q@ peduncles, strongly irregular, yellow, Utricularia ip. 
8 Plants not as described, rarely aquati 7 
/O Ovaries two in each flower, Jbecoming separate 
follicles in fruit, the seeds bearing 
14a silxy tuft of hairs; juice milky, 
/2, Corolla bell-shaped, the stamens 3 
/( attached to the base of the corollae Apocynaceae ip 
4/2 Corolla 5S-parted, the filaments 
united into a tube which encloses 
[ tne Ovarles, the tube bearing a 
ib ,circlet of 5 hooded appendases, / 
‘each with an incurved prongy, Asclepiadaceas \p) 
/O Ovary one in each flower 
/2 Plants without chlorophyll or 
proper leaves, flesh-colored, 
parasitic on roots of other 
Dlants ‘Cuscuta arvensis, a leaf- 
It less yellow twinins parasite on 
alfalfa with small scarious 
N flowers in globose clusters may 
qh occur in t.2 warmer dryer pesdes Orovanchacerze ip 4 
| Py 
/& Plants with chlorophyll and proper 
JG -eeT2 3% 
