350 GENTIANACEAE 



oblanceolate or often reduced to scales on the main branches, 3-12 mm. long, usually puberulent ; 

 flowers solitary in the leaf-axils, but sometimes approximate on short branchlets, subsessile or 

 on short peduncles; calyx-lobes 5-7, linear-subulate, about 4 mm. long; corolla funnelform, 

 4-7 mm. long, white tinged with purple on the outer surface, the lobes spreading, oblong-ovate ; 

 capsule-lobes 6-7 mm. in diameter, diverging, almost separate, the thin membranous wall 

 shining ; seeds 2 in each cell, semiglobose, pitted. 



Rocky washes and dry slopes, Lower Sonoran Zone; desert ranges of Inyo and San Bernardino Counties 

 to southern Nevada. The proposed variety is a larger-flowered form found "14 miles northeast of Barstow" 

 by Parish. Type locality: "Canons and hillsides, southeastern part of the State of Nevada." April-May. 



Family 120. LOGANlACEAE. 



Logan I A Family. 



Herbs, shrubs, woody vines or trees, with simple opposite or rarely verticillate 

 stipulate leaves, watery juice, and cymose inflorescence. Flowers regular, usually 

 perfect, 4-5-merous. Calyx-lobes imbricate. Corolla sympetalous, the lobes val- 

 vate, imbricate or contorted. Stamens as many as the corolla-lobes, alternate with 

 them and attached to the tube or the throat. Disk none or small. Ovary superior, 

 2-celled; style usually simple; stigma capitate or 2-lobed ; ovules usually many, 

 amphitropous or anatropous. Fruit a capsule, berry or drupe ; seeds with endosperm. 



A family of 33 genera and about 600 species, mostly tropical. 



1. BUDDLEJA [Houst] L. Sp. PI. 112. 1753. 



Shrubs, or some trees or herbs, usually pubescent. Leaves simple, entire or dentate, 

 petioled. Stipules connecting the bases of the petioles sometimes reduced to a mere line. 

 Flowers 4-merous, or rarely 5-merous. Calyx campanulate. Corolla rotate-campanulate 

 or salverform, the lobes ovate or orbicular, imbricate in tlie bud. Anthers sessile or nearly 

 so on the throat or tube of the corolla. Fruit a septicidal, globose or oblong capsule; 

 valves 2-cleft at the apex and separating from the placentae. Seeds numerous; embryo 

 straight. [Name in honor of Adam Buddie, an English botanist and contemporary of 

 John Ray.] 



A genus of about 70 species, inhabiting tropical and warm temperate regions of North and South America, 

 Asia, and South Africa. Type species, Buddleja americana L. 



1. Buddleja utahensis Coville. Utah Buddleia. Fig. 3786. 



Buddleja utahensis Coville, Proc. Biol. Soc. Wash. 7: 69. 1892. 



Low, much-branched shrub, 20-30 cm. high, herbage including calyx densely tomentose, older 

 bark gray and shredded. Leaves linear to linear-oblong, with revolute margins, 1.5-3 cm. long, 

 widely spreading or reflexed, undulate-dentate petioles 2 mm. long or less ; the axils usually 

 with a fascicle of very small leaves ; inflorescence of globose clusters of cymules, forming 2-4 

 heads, about 10-15 mm. thick and about as far apart, at the ends of the branches; corolla purple, 

 4-5 mm. long, broadly salverform, the lobes suborbicular, about 1 mm. long, the tube tomentulose 

 without. 



Dry desert slopes, especially in volcanic rock, Lower Sonoran Zone; Panamint and Kingston Mountains, 

 Mojave Desert, California, and in the neighboring Charleston Mountains and Armagosa Desert, southwestern 

 Nevada, east to southern Utah. Type locality: near St. George, Utah. May-Oct. 



Family 121. GENTIANACEAE. 

 Gentian Family. 



Herbs with bitter colorless juice, and opposite or rarely verticillate exstipulate 

 leaves. Flowers regular and perfect, axillary or terminal at the ends of the stems 

 or branches, often forming a cymose inflorescence. Calyx persistent, free from the 

 ovary, 4—1 2-lobed, -parted or -toothed. Corolla sympetalous, funnelform to rotate, 

 often marcescent, 4-12-lobed or -parted, the divisions convolute or rarely imbricate 

 in the bud. Stamens as many as the lobes of the corolla and alternate with them, 

 inserted on the tube or throat ; anthers 2-celled and dehiscent longitudinally. Ovary 

 1-celled, or (in some exotic genera) 2-celled ; ovules numerous, anatropous or 

 amphitropous; style 1, simple, or rarely cleft a short distance below the stigmatic 

 surface, rarely none; stigma entire or 2-lobed. Fruit a capsule, usually dehiscent 

 from the apex by 2 valves. Seeds usually numerous, minute, globose, angled or com- 

 pressed ; endosperm fleshy ; embryo minute, terete, or conic. 



A family of about 65 genera and 600 species of wide distribution in all continents, but most abundant in 

 the temperate regions. 



