174 LINN J3 AN CLASS V. 



Apocynum. Calyx 5-parted. Corolla campanulate, 5-cleft, with 

 scales at the base, alternating with the lobes. Anthers sagittate. 

 Follicles long, slender. (Dog-bane.) (Indian Hemp.) Apocynacece, 

 80. 



Gclscmhtnm. Sepals 5, small. Corolla funnel-form, border 5 lobed. 

 Capsule 'J-celled, many-seeded. (Yellow Jessamine.) Loganiaceoz, 81. 



Aaclepia*. Calyx 5-parted, small. Corolla 5-parted; lobes lanceo- 

 late, renexed. Staminal crown 5-leaved ; leaflets opposite the anthers, 

 each usually with a subulate process. Follicles smooth or muricate, 

 ventricose. (Milk-weed, Silk-weed.) Asclepiadacece, 79. 



Amsonia. Calyx 5-parted. Corolla funnel-form, with the throat 

 closed. ^Estivation twisted. Follicles 2, erect. Apocynacece, 80. 



Echites. Calyx 5-parted, with acute segments. Corolla funnel- 

 shaped, 5-parted, throat naked. Follicles 2, distinct, long, slender. 

 Apocynacece, 80. 



GLonolobus. Calyx 5-parted. Corolla rotate, 5-parted. Staminal 

 crown shield-form, 5-parted. Follicles 2, ventricose. Asclepiadacece, 79. 



Hydrolea. Calyx 5-parted. Corolla campanulate. Anthers cordate. 

 Styles long, diverging. Capsule 2-celled. Seeds numerous. Hydro- 

 pliyllacew, 85. 



Dichondra. Calyx 5-parted. Segments spatulate. Corolla short, 

 bell-form, 5-parted. Capsule 2-celled, 1 seed in each cell. Convolvu- 

 laceoz, 86. 



Slylisma. Convolvulus. Sepals 5, equal. Corolla campanulate. 

 Styles 2, rarely 3, stamens included. Convolvulacece, 86. 



Corolla 5-petaled. 



Heuchcra. Calyx inferior, 5-cleft. Petals small. Capsule 2-celled, 

 many-seeded. (Alum-root.) Saxifragacex, 59. 



Panax. Polygamous, or dioecious. Flowers in umbels. Styles 2 — 

 3. Involucre many-leaved. Fruit somewhat globular, 2 — 3-seeded. 

 (Ginseng.) Araliacece, 62. 



Boykinia. Calyx turbinate, or urceolate, cohering to the ovary ; 

 limb 5-cleft Petals entire. Styles 2 — 3. Capsule 2 — 3-celled, many- 

 seeded. Herbaceous, perennial plants. Flowers small in corymbose 

 cymes. Saxifragacece, 59. 



Corolla wanting. 



Atriplex. Flowers polygamous. Calyx 5-sepaled in the perfect 

 flower, 2-sepaled in the pistillate. Fruit depressed, 1-seeded. Cheno- 

 podiaoece, LOO. 



Ohenopodtum, Calvx 5-parted, inclosing the fruit. Style 2-cleft. 

 I I. n- like. < 'I,, nopodiacea, 100. 



SaUola. Perianth 5-cleft, investing the fruit. Styles 2. Embryo 

 spiral. Ohenopodiaeea, 100. 



I'!, mis. Calyx campanulate, -I — 5-cleft Seed 6, inclosed in a sa- 

 mara Stamens A — 8. (Kim.) 110. 



Polygamous. Perfect flowers Calyx 5-parted. Styles 

 spreading. Drupe 1 -celled. Staminate flowers, with the calyx 6- 

 parted Stamens usually 0. Small tree. Ulmacea, 1 1 0. 





