PRIMROSE FAMILY 185 



(h) As in (a), but throat of corolla narrowed. Androsace, II 



(c) Segments of corolla much refiexed. Stamens protruding. 



Dodecatheon, VIII 

 B 



Steins leafy, at least near the summit. 



(a) Corolla yellow. No sterile appendages alternating with the 



stamens. Lysimachia, III 



(6) Corolla yellow. Sterile appendages alternating with the 



stamens. Steironema, IV 



(c) Corolla white. Stems with leaves mostly whorled near the 



summit. Trientalis, V 



(f/) Corolla scarlet (sometimes white or blue). Stems low, leafy 



throughout, Anagallis, VI 



(e) Corolla inconspicuous, pink. Stems leafy, very short. 



Centunculus, VII 

 I. PRIMULA L. 



Low", perennial herbs, with much-veined basal leaves ; scapes 

 each bearing an umbel of flowers, which are often showy. Calyx 

 tubular, decidedly angled, 5-cleft. Corolla more or less salver- 

 shaped, with the tube widened above the insertion of the sta- 

 mens ; the 5 lobes of the limb often notched or cleft. Stamens 

 5, not protruding outside the corolla tube. Capsule egg-shaped, 

 splitting at the top into 5 valves, each of which may divide 

 in halves. 



1. P. grandiflora Lam. True Primrose. Leaves spatulate or 

 obovate-oblong. Flowers rising on separate slender pedicels from 

 the leaf axils. Corolla originally pale yellow, but varying to white, 

 red, and many intermediate shades, with a broad, flat limb. Culti- 

 vated from Europe. 



2. P. sinensis Sabine. Chinese Primrose. A rather coarse, 

 downy plant. Leaves round-heart-shaped, more or less lobed and 

 cut, long-petioled. Flowers large, in umbels, usually rose color or 

 white. Calyx large, inflated and conical. Cultivated as a house 

 plant from China. 



II. ANDROSACE L. 



Small herbs, with clustered basal leaves. Flowers very small, 

 solitary or umbeled. Calyx 5-cleft, with a short tube. Corolla 

 salver- or funnel-shaped, contracted at the throat, its tube 



