KEY. 



S63 



closing the seed. Sterile flowers: aments globular, sur- 

 rounded by scales at the base ; stamens monadelphous (an- 

 thei'-cells 3-8 under a peltate connectile). Tree. 



Taxus baccata, L. 



831. Stigma 6- to 9-rayed. Anthers pendulous on long 



filaments. Ben-ies 6- to 9-seeded, black. Flowers very 



small, reddish, crowded in the axils of the upper leaves. 



Leaves imbricated. Shrub procumbent, 1-4 feet long. 



(96) Empetrum nigrum, L. 

 Stigmas 3 or 4 ; style slender. Stamens exserted. 

 Drupe 3- or 4-seeded, globular, minute (dry, when ripe). 

 Flowers in terminal clusters of 10-15, with brownish scales 

 and purple stamens and styles. Shrub diffuse, very slender. 

 Stems 1 foot high. Leaves revolute on the margin. 



(96) Corema Conradii, Torr. 



853. Leaves alternate 855 



Leaves opposite, or fascicled. Calyx sometimes 

 early deciduous 853 



853. Corolla none 854 



Corolla present, 4-parted. Calyx 4-toothed. Sta- 

 mens 2. (329) Olea Americana, L. 



854. Leaves silvery-scurfy, elliptical, or ovate, entire. 

 Calyx 4-parted in the sterile, 4-cleft and urn-shaped in the 

 fertile flowers, becoming here pulpy and berry-like in fruit, 

 enclosing the achenium. Fruit yellowish-red. Stamens 8. 

 Ovary 1-celled ; style slender ; stigma 1-sided. Flowers 

 small, clustered in the axils, or the fertile solitary. 



Shepherdia Canadensis, Nutt. 

 Leaves not silvery-scurfy, oblong- or lance-ovate, 

 acuminate at both ends, often serrulate. Calyx of 4 minute 

 sepals, early deciduous. Ovary 2-celled; style slender; 

 sti<^ma somewhat 2-lobed. Drupe small, 1-seeded, fleshy, 

 o-laucous-purple. Flowers small, crowded m ament-like 

 clusters, from the axils of last year's leaves, imbricated with 

 gcales. Forestiera acuminata, Poir. 



855. Flowei-s, at least the fertile, with a complete peri- 

 anth, calyx and corolla 856 



Flowers with only one set of perianth, or else in 



. 864 



aments 



