LOGANIACEAE. 



291 



at least in the bud. Corolla gamopetalous, funnelform, eampanulate, or 

 rarely rotate. Stamens inserted on the tube or throat of the corolla; anthers 

 2-celled, the sacs longitudinally dehiscent; pollen-grains simple. Disk usu- 

 ally none. Ovary superior, 2-celled (rarely 3-5-celled) ; ovules anatropous 

 or amphitropous. Fruit a 2-valved capsule in our species. Embryo small, 

 usually straight; endosperm copious; radicle terete or conic. About 30 

 genera and 400 species, widely distributed in warm and tropical regions. 



1. BUDDLEIA L. 



Mostly tomentose shrubs or trees, with cymose, panicled or capitate, small 

 flowers. Calyx eampanulate^ 4-toothed. Corolla tubular to eampanulate, its 

 4 lobes spreading. Stamens 4 nearly sessile. Style thickened at the apex; 

 ovules in several series. Capsule septicidally 2-valved. -Seeds numerous, ob- 

 long, with fleshy endosperm. [Commemorates Adam Buddie, an English plant- 

 lover.] About 75 species, widely distributed in tropical regions, a few in the 

 temperate zones. Type species: Buddleia americana L. 



1. Buddleia madagascariensis Lam. 



Madagascar Buddleia. (Fig. 310.) Snufp- 

 PLANT. A vine-like shrub 10°-15° high, 

 with long round slender white-tomentose 

 branches. Leaves oblong-lanceolate to 

 ovate-lanceolate, 4-6' long, about IV wide, 

 acuminate at the apex, obtuse at the base, 

 entire or very nearly so, dark green and 

 glabrous above, densely white-tomentose 

 beneath, the tomentose petioles 1' long or 

 less; flowers in terminal thyroid panicles 

 6'-12' long, white-tomentose; corolla tubu- 

 lar, purplish, about 3" long. [B. Neemda 

 of Lef roy and of H. B. Small ; B. americana 

 of Eeade, Jones, Verrill and Harshberger.] 



Roadsides, escaped from cultivation. Na- 

 tive of Africa. Flowers in spring and summer. 



Family 3. GENTIANACEAE Dumort. 



Gentian Family. 



Bitter mostly glabrous herbs, with opposite (rarely verticillate) estipu- 

 late entire leaves, reduced to scales in Bartonia, and regular perfect flowers 

 in clusters, or solitary at the ends of the stem or branches. Calyx inferior, 

 persistent, 4-12-lobed, -toothed or -divided (of 2 sepals in Obolaria), the 

 lobes imbricated or not meeting in the bud. Corolla gamopetalous, often 

 marcescent, 4-12-lobed or -parted. Stamens as many as the lobes of the 

 corolla, alternate with them, inserted on the tube or throat ; anthers 2-celled, 

 longitudinally dehiscent. Disk none, or inconspicuous. Ovary superior in 

 our genus, 1-celled or partly 2-celled ; ovules numerous, anatropous or 

 amphitropous; stigma entire, or 2-lobed, or 2-cleft, Capsule mostly de- 



