710 HYDROPHYLLACEAE 



funnelform or salver-shaped, blue; lobes 5, imbricate. Stamens 5, included; fila- 

 ments irregularly inserted in the corolla-tube. Ovary 1 -celled, or sometimes 

 imperfectly 2-celled; styles distinct; ovules numerous on each placenta. Cap- 

 sule subglobose or oblong, 2-valved. Seeds rugose. [Nama L., in part.] 



Diffuse; corolla more than twice as long as the calyx. 1. M. demissum. 



Erect; corolla shorter than the calyx. 2. M. angusti folium. 



1. M. demissum (A. Gray) Kuntze. Diffuse annual; stem branched at 

 the base, 5-10 cm. high, hirsutulous; leaf-blades linear-spatulate, more or less 

 tapering into a petiole; flowers subsessile in the axils; sepals narrowly linear, 5-7 

 mm. long; corolla 8-10 mm. long, purple. Nama demissum A. Gray. Desert 

 regions: Wash. Utah Ariz. Calif. Son. Ap-Jl. 



2. M. angustifolium (A. Gray) Kuntze. Annual; stem erect, minutely 

 glandular-puberulent, 1-3 dm. high; leaves narrow, lineai or nearly so, 1-3 cm. 

 long; flowers subsessile in the forks; calyx-lobes narrowly linear or linear-spatulate, 

 4-5 mm. long, in fruit even 10 mm. long; corolla about 2 mm. long. Nama 

 dichotomum angustifolium A. Grav. Plains and prairies: Tex. Colo. N.M.; 

 Mex. Son. Je-O. 



12. CONANTHUS S. Wats. 



Small dichotomously branched winter annuals. Leaves alternate, linear- 

 spatulate, entire. Flowers solitary in the forks. Calyx-lobes 5, narrow, similar. 

 Corolla funnelform, deciduous, not appendaged. Stamens unequally inserted 

 in the tube of the corolla. Styles unite.d to near the apex; stigmas capitellate; 

 ovules about 10 on each placenta. Capsule loculicidal. Seeds smooth. 



1. C. aretioides (Hook.) S. Wats. Depressed winter annual; stem 5-10 

 cm. long, repeatedly forked, hirsute-hispid; leaves spatulate-linear; flowers 

 sessile in the forks; calyx-lobes filiform-linear, hispid with long white hairs; corolla 

 10-15 mm. long, purple, funnelform. Sandy or dry plains: Ore. Wyo. N.M. 

 Calif. Son. My-Je. 



13. TRICARDIA Torr. 



Perennial caulescent herbs, branched from the base. Leaves alternate, 

 entire. Flowers perfect, regular, racemose. Sepals only slightly united, very 

 dissimilar; the three outer much larger, and cordate, becoming scarious and finely 

 reticulate-veiny, the inner two linear. Corolla broadly campanulate, deciduous, 

 the 10 internal appendages free and rather distant from the filaments. Stamens 

 equally inserted on the base of the corolla. Ovary 2-celled by the intrusion of 

 the placentae. Style 2-cleft; ovules 4 on each placenta. Capsule loculicidal. 

 Seeds roughened. 



1. T. Watsoni Torr. Perennial; stem branched from the base, 1-2 dm. 

 high, villous with long hairs or more glabrate in age; leaf -blades spatulate or 

 oblanceolate, 3-5 cm. long; larger sepals cordate in fruit, becoming 1.5 cm. or 

 more broad and long; corolla purplish, about 6 mm. wide, moderately 5-lobed; 

 stamens included. Arid regions: Nev. s Utah Calif. Ap-Je. 



FAMILY 111. EHRETIACEAE. EHRETIA FAMILY. 



_Undershrubs, shrubs, or trees, rarely herbs. Leaves mainly alternate, 

 without stipules; blades simple and entire. Flowers perfect, regular, in 

 compound cymes. Calyx of 5 or fewer, partially united sepals. Corolla of 

 5, rarely 4 or 6, more or less united petals, deciduous, with spreading lobes. 

 Stamens 4-6, adnate to the base of the corolla-tube; filaments often united 

 at the base; anthers introrse. Gynoecium of 2-4 united carpels; ovary 2-4- 

 celled, or 1-celled, some of the partitions being imperfect; styles 2, distinct 

 or partially united, or 4, united in pairs; ovules 1 or 2 in each cavity. Fruit 

 drupaceous, with a 4-celled, but 1-seeded stone, or 2 two-seeded or 4 one- 

 seeded stones. 



