138 PRACTICAL BOTANY. 



No thorny trees, but shrubs or lierbs, the former 

 often climbing, or with watery juice also 150 



150. Herbs 151 



Shrubs 153 



151. Leaves bipinnate. Flowers perfect, or polyga- 

 .nous, axillary, white. Stamens 5 (or 10). Legume flat, 4- to 

 6-seeded. Petioles with one or more glands. 



Desmanthus brachylobus, Benth. 



Leaves simple 152 



153. Calyx 5- (to 1-) toothed or lobed 143 



Calyx of 2 sepals. The 5 stamens adhering to the 

 short claws of the 5 rose-colored petals. Style 3-lobed at the 

 apex. Stems from small tubers, simj^le, with a pair of oppo- 

 site lance-linear or spatulate-oblong leaves, and a loose ra- 

 ceme of flowers. Petals rose-color, or white, tinged with 

 red. Olaytonia. 



153. Anthers opening by 2 terminal pores. Calyx-lobes, 

 petals and stamens 5 (the latter sometimes 6 or 7). Pod 

 5-celled, 5-valved. Leaves alternate, elliptic, ferruginously 

 downy underneath, and strongly replicate at the margin. 

 Flowers white, in terminal, umbel-like clusters, from scaly 

 buds. Shrub 2-5 feet high. 



Ledum latifolium, Ait. (661). 

 Anthers opening lengthwise 154 



154. Leaves trifoliolate 92 



Leaves not trifoliolate 155 



155. Stamens opposite the petals. Fruit a berry, drupe, 

 or capsule 156 



Stamens alternate with the petals. Fruit a pod, 

 sometimes resembling a berry. Seeds enclosed in a red aril. 

 A disk filling the bottom of the calyx 161 



156. Calyx minute, truncate or obscurely 5-toothed. A 

 disk in the calyx, or none. Shrubs, with a watery juice, 

 with tendrils, or none. Flowers small, greenish. Petals 5, 

 deciduous. Berry 2-celled, usually 4-seeded 157 



Calyx larger, 5-cleft or parted, with a fleshy disk. 

 Fruit a drupe or capsule. Shrubs without tendrils, some- 

 times climbing 159 



