J^x^ 



or THE 



UNIVERSITY 



ANALYTICAL KEY. 



1 1 Herbs. 



J Leaves mostly radical. 



Stamens 5, anthers united; lower petal spurred; style 1 Violaceae, 25 



Stamens 5, opposite the petals. Sepals 2; style 3-cleft Portulacaceae, 29 



Sepals united; styles 5 Plumbaginaceae, 71 



Stamens 10, on the receptacle; stigma 5-lobed Ericaceae, 68 



Stamens 10, on the calyx; styles 2 Saxifragaceae, 55 



Stamens 6, in 3's; sepals 2; petals 4, in pairs Fumariaceae. 22 



J J Leaves alternate. 



Corolla regular. 



Stigma one, often 2-lobed; stamens 6 (2 and 4) Cruciferae, 22 



Stigma 1, calyx a striated tube bearing 6 petals Lythraceae, 59 



Stigmas 5; sepals and petals 5 each; stamens 5-10 Geraniaceae, 33 



Styles 3-5; sepals and petals 5 each; stamens 5 Linaceae, 32 



Style 3-cleft; sepals 2; petals 5; fleshy herbs Fortulacaceae, 29 



Corolla irregular; style one. 



Stamens 10; fruit a legume Leguminosce, 38 



Stamens 5; anthers united; lower petal spurred Violaceae, 25 



Stamens 6. in 2 sets; stigma 2-lobed Fumariaceae, 22 



Stamens 6-8, united; ovary 2-celled Folygalacese, 27 



+ + + Leaves opposite or wliorled. 



Styles 2-5; fruit a 1 -celled capsule; stamens 10 or 5 Caryophyllaceae, 27 



Styles 3; flowers sessile; stamens 4 to 7 Frankeniaceae, 20 



Styles or stigmas 5; fruit 5 akenes Geraniaceae, 33 



Small white flowers clustered on terminal peduncles Saxifragaceae, 55 



Leaves in 3's; white flowers; petals 6 in 2 sets Fapaveraceas, 20 



Leaves a single pair on the stems; fleshy Fortulacaceae, 29 



2. OVARY AND FRUIT INFERIOR (adherent to the calyx), or mainly so. 



Shrubs; sepals, petals, and stamens each 4-5; leaves simple. 



Stamens opposite the clawed petals; style 3 cleft Rhamnaceae, 35 



Sepals petaloid; ovary globose; styles 2, or 2-cleft Saxifragaceae, 55 



Leaves opposite; flowers in heads with petaloid involucre or in \ 

 cymes; the sepals, petals, and stamens 4 each ) 



Herbs. Sepals and petals each 5; styles distinct; leaves simple Saxifragaceae, 55 



Parts of the flower mostly in 4's (rarely in 2's or 6's) Onagraceae, 59 



Tendril-bearing vines, with prickly fruit Cucurbitaceae, 63 



Flowers in umbels; styles 2 Umbelliforaa, 63 



