FEANGULACEAE 751 



1. Ceanothus microphyllus Michx. A slender evergreen shrub 3-6 dm. tall, 

 glabrous, or nearly so. Stems much branched and diffuse : leaf-blades leathery, very 

 small, 3-6 mm. long, suborbicular, oval or oblong, obtuse, often crowded, nearly sessile : 

 panicles rather loosely flowered : sepals 5, triangular, acute, converging, about as long as 

 the hypanthium : petals dipper-like, about 1.5 mm. long, long-clawed: stamens 5: fila- 

 ments converging : anthers brown : fruit 4-5 mm. in diameter, depressed, 3-lobed, the 

 lobes slightly crested on the back. 



In dry sandy pine lands, Georgia and Florida. Spring. 



2. Ceanothus serpyllifolius Nutt. A low slender evergreen shrub. Stems diffusely 

 branched, decumbent, the branches very slender or filiform : leaf-blades oblong or ovate- 

 oblong, 5-10 mm. long, obtu.se or truncate at the apex, serrulate, obtuse at the base, 

 glabrous above, strigose like the short petioles, beneath : flowers 11-15 in corymbose pani- 

 cles, the panicles sometimes compound. 



In pine lands, southeastern Georgia and peninsular Florida. Spring. 



3. Ceanothus ovatus Desf. A slender shrub 2-6 dm. tall, with nearly glabrous 

 foliage, the twigs and branchlets viscid-puberulent. Leaf-blades varying from narrowly 

 oblong to elliptic, oval or ovate, 1.5-6 cm. long, obtuse or acutish, serrate with gland- 

 tipped teeth, not very prominently veined, acute or rounded at the base, glabrous or with 

 few scattered hairs beneath, slender-petioled : panicles loosely flowered : sepals 5, triangu- 

 lar-ovate, longer than the hypanthium, acute, converging : petals dipper-like, 1.5-2 mm. 

 long, long-clawed: filaments converging: anthers pale: fruit 4-4.5 mm. in diameter, 

 3-lobed, the lobes not crested on the back. 



In sandy soil, Arkansas to Georgia and Florida. Spring. 



4. Ceanothus pub6scens (T. & G. ) Rydb. A shrub similar to C. ovatus in habit, 

 the twigs and branchlets copiously pubescent. Leaf -blades relatively thick, oblong-ovate to 

 narrowly oblong, copiously and permanently pubescent beneath, usually prominently veined. 



On hillsides and in dry soil, Michigan to Iowa, Nebraska and Texas. Spring. 



5. Ceanothus interm^dius Pursh. A shrub 3-10 dm. tall, usually much branched, 

 and finely pubescent throughout. Leaf-blades ovate to oblong-ovate or nearly oblong, 1-3 

 cm. long, blunt or acute, finely serrate, rather thick, prominently nerved beneath ; petioles 

 1-5 mm. long: panicle 1-2.5 cm. long: flowers much like those of C. Americanus, but 

 somewhat smaller : fruit 4-5 mm. in diameter, less crested than that of the following 

 species. 



In pine lands, Georgia, Florida and Alabama. Spring. 



6. Ceanothus Americanus L. A shrub 2-9 dm. tall, with pubescent twigs and 

 leaves which tend to become glabrous in age. Leaf-blades ovate or ovate-lanceolate or 

 rarely orbicular-ovate, 3-10 cm. long, thin, 3-nerved, acute or acutish, or rarely acuminate, 

 serrate, abruptly narrowed or subcordate at the base, short-petioled : panicles 1-4 cm. long, 

 densely flowered : sepals 5, triangular, acute, about as long as the hypanthium, incurved : 

 petals 5, dipper-like. 1-1.5 mm. long, long-clawed: anthers chocolate-colored: fruit 5-6 

 mm. in diameter, 3-lobed, the lobes crested on the back. 



In dry woods and on hillsides, Ontario to Manitoba, Florida and Texas. Spring and summer. 

 New Jersey Te.\. Red-root. 



10. COLUBRINA L. C. Eich. 



Tropical shrubs or small trees, with erect or sarmentose stems. Leaves alternate : 

 blades sometimes 3-nerved at the base, entire or toothed : stipules deciduous. Flowers 

 perfect, in small axillary cymes or clusters. Hypanthium hemispheric. Sepals 5, her- 

 baceous, triangular-ovate, spreading. Disk filling the hypanthium, 5-angled or 5-10- 

 lobed. Petals 5, inserted below the disk, the blades hooded. Stamens 5, included : fila- 

 ments filiform. Ovary immersed in the disk and merging into it, 3-celled : styles 3, united 

 below : stigmas obtuse. Drupe berry-like, slightly 3-lobed, with a dry or slightly fleshy 

 epicarp, separating into 3 membranous crustaceous or cartilaginous capsule-like nutlets. 

 Seeds flattened, 3-angled with a smooth, shining, leathery testa. Endosperm thin. 



Flower-clusters sessile or nearly so : leaf-blades toothed : sepals and style long-persistent. 



. 1. C. Texensis. 



Flower-clusters manifestly peduncled : leaf-blades entire : sepals and style deciduous. 



Leaf-blades glabrate, never rusty-tomentose, not 3-nerved. 2. C. reclinata. 



Leaf-blades rusty-tomentose beneath, 3-nerved. 3. C. colubrina. 



1. Colubrina Texensis A. Gray. A pubescent much branched shrub 1-5 m. tall, its 

 zigzag branches unarmed or nearly so. Leaf-blades leathery, ovate, oval, oblong, or obovate, 



