ioo GENTIAN ORDER 



2 ovules in each cavity, stigma 2-cleft, fruit a flat samara, winged at the 

 apex only or all around, usually 1-seeded ; flowers small, dioecious or polyg- 

 amous, rarely perfect, clustered, appearing before or with the leaves; 

 leaves odd-pinnate or simple; trees. 



1. Tree 20-50 ft. high; leaflets lanceolate, 3-8 in. 



long F. lanceoldta 



2. Shrub 8-20 ft. high ; leaves round to ovate, 1-2 



in. wide F. anomala 



Adelia P. Brown 1756 



(Gr. adelos, inconspicuous, from the flowers) 



(Forestiera Poir.) 



PL 17, fig. 2. 



Sepals 4 or none, united, petals none or 1 or 2, small, deciduous, yellow 

 or greenish, stamens 2-4, ovary 2-celled, ovules 2 in each cell, style slender, 

 stigma 2-lobed, fruit an oblong or subglobose drupe with 1 or rarely 2 

 seeds ; flowers small, dioecious or polygamous, in clusters, short racemes or 

 panicles from scaly buds produced at the leaf-axils of the preceding season, 

 appearing before or with the leaves; leaves opposite, simple, -toothed or 

 entire; shrubs. 

 Stems 3-10 ft. high ; leaves 2-3 cm. long A. neo-mexicana 



APOCYNACEAE DOGBANE FAMILY 



Sepals 5, united into a tube, petals 5, united, stamens 5, inserted on 

 the corolla tube, ovary of 2 distinct carpels, style and stigma 1, fruit of 

 2 long follicles ; flowers solitary or clustered ; perennial herbs with alter- 

 nate or opposite simple, usually entire leaves. 



1. Leaves opposite Apocynum 



2. Leaves alternate Amsonia 



Amsonia Walter 1788 Amsonia 

 (Named for Amson, an American physician) 



Sepals 5, united, petals 5, blue or bluish, united, stamens 5, in the 

 throat of the corolla, ovary of 2 carpels connected above by the style, 

 fruit of 2 erect, cylindrical several-seeded follicles ; flowers in cymes ; 

 leaves alternate, entire ; perennial. 

 Stems .5-2 ft. high; leaves linear to oblong, 1-2 in. 



long; flowers 1-2 cm. long A. texdna 



