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Primulaceae Ventenat

報春花科

CHING-I PENG and MUH-TSUEN KAO

Primula

Credit: HAST

Herbs, annual, biennial and perennial; stems erect or creeping. Leaves radical or cauline, simple, alternate, opposite, or verticillate, rarely pinnately lobed, estipulate. Flowers in racemes, axillary, or superposed verticils, bisexual, usually actinomorphic; calyx persistent, 4- to 9-. usually 5-lobed; corolla rotate, salverform or infundibuliform, sometimes subcampanulate, imbricate in bud, the limb 4- to 9-lobed; stamens as many as the corolla-lobes and opposite them, inserted on the tube; staminodes alternate with the stamens, rarely present; ovary superior, glabrous or pubescent, 1-locular; ovules many, the placentation free-central. Seeds small, many, the endosperm copious.

Twenty-two genera and about 1,000 species; mainly distributed in the Northern Hemisphere, a few in the Tropics and the Southern Hemisphere; five genera and forteen species in Taiwan.

Chen, F.-H., C.-M. Hu, Y.-Y. Fang, C.-Z. Cheng, Y.-C. Yang & R.-F. Huang. 1989. Primulaceae (1), Lysimachieae-Primuleae. In F.-H. Chen & C.-M. Hu (eds.), Flora Reipublicae Popularis Sinicae. Vol. 59(1). Science Press, Beijing. 217 pp.

Hu, C.-M. & S. Kelso. 1996. Primulaceae. In Z. Y. Wu & P. H. Raven (eds.), Flora of China, Myrsinaceae through Loganiaceae, Vol. 15. Science Press, Beijing and Missouri Botanical Garden, St. Louis, pp 39-189.


KEY TO GENERA

1 Plant scapose, umbellate or verticillate; leaves all basal.   (2)
+ Plants with leafy aerial stems; leaves all cauline or basal and cauline.   (3)
       
2 (1) Flowers small; corolla-tube shorter than the calyx.   Androsace
+ Flowers large; corolla tube longer than the calyx.   Primula
       
3 (1) Leaves all alike.   (4)
+ Basal leaves petiolate; cauline leaves sessile.   Stimpsonia
       
4 (3) Capsule circumscissile dehiscence.   Anagalis
+ Capsule longitudinally dehiscent or indehiscent   Lysimachia

Lower Taxa


 

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