EHRETIA FAMILY 711 



Corolla not appendaged; stamens unequally inserted; nutlets rough-granulate, ventrally 

 united. 1- EDDYA. 



Corolla appendaged; stamens equally inserted; nutlets smooth and shining, united only 

 at the center. 2. TRIQUILIOPSIS. 



1. EDDYA Torr. 



Low suffruticose plants. Leaves alternate, fascicled, rigid, in age strongly 

 revolute. Flowers perfect, regular, solitary in the forks. Calyx-lobes narrow, 

 linear. Corolla not appendaged. Stamens unequally inserted. Fruit deeply 

 4-lobed, the mature nutlets rounded, ventrally united, thin-walled, rough-granu- 

 late. Embryo straight. 



1. E. hispidissima Torr. Stem diffusely branched, procumbent, 1-3 dm. 

 high; leaves fascicled, rigid, lanceolate or linear, hispid, 5-10 mm. long, margins 

 at last strongly revolute; flowers scattered; calyx-lobes linear, resembling the 

 leaves; corolla 5-6 mm. long. Coldenia hispidissima A. Gray. Dry hills: w 

 Tex. s Utah Nev. Ariz. Son. Je-Jl. 



2. TRIQUILIOPSIS (A. Gray) HeUer. 



Annual or perennial herbs, dichotomously branched. Leaves alternate, 

 petioled, veiny. Flowers perfect, regular, clustered in the forks. Calyx-lobes 

 linear, hispid. Corolla salver-shaped, appendaged within; stamens equally 

 inserted. Fruit deeply 4-lobed; nutlets rounded, smooth and shining, united 

 only at the center. Cotyledons 4-parted around the cotyledons. 



Annual, canescent and hirsute; leaf-blades rhombic or rotund; corolla pink or white. 



1. T. Nuttallii. 



Perennial, often suffruticose at the base, merely canescent; leaf-blades obovate or ovate; 

 corolla bluish. 2. T. Palmeri. 



1. T. Nuttallii (Hook.) Heller. Prostrate annual; stem divergently dichoto- 

 mously branched, canescent; leaves petioled; blades rhombic or rounded, 4-8 

 mm. long, with 5-7 strong veins below, canescent on both sides, revolute-mar- 

 gined; flowers clustered in the axils; corolla white or pink, 3-4 mm. long. Col- 

 denia Nuttallii Hook. Arid plains: Wash. Wyo. Ariz. Calif. My-Au. 



2. T. Palmeri (A. Gray) Rydb. Perennial, suffruticose at the base, 1-3 

 dm. high, diffusely branched; leaf -blades obovate or ovate, with 6 pairs of strong 

 veins, impressed on the upper surface, canescent, about 5 mm. long; calyx-lobes 

 lanceolate, half as long as the bluish corolla; nutlets globose, only one or two 

 maturing. Coldenia Palmeri A. Gray. Sandhills: Ariz. s Utah s Calif. L. 

 Son. Ja-My. 



FAMILY 112. HELIOTROPACEAE. HELIOTROPE FAMILY. 



Herbs, shrubs, or vines. Leaves alternate, without stipules, usually 

 entire-margined. Flowers perfect, regular, mainly in scorpioid racemes or 

 spikes, rarely axillary. Calyx of 5 slightly united sepals. Corolla of 5 

 united petals, funnelform, salver-shaped, or campanulate. Stamens 5, 

 wholly adnate or nearly so to the corolla-tube. Gynoecium of 2-4 united 

 carpels; ovary 2-4-celled, often 4-lobed; styles united; stigmas annular, 

 surpassed by a 2-lobed appendage; ovules pendulous. Fruit dry, separat- 

 ing into 2 or 4 one-seeded nutlets, drupaceous. 



Cone of the stigma not setose; flowers in terminal scorpioid spikes or racemes. 



1. HELIOTROPIUM. 

 Cone of the stigma penicillate-setose; flowers axillary to leaf-like bracts. 



2. EUPLOCA. 



1. HELIOTROPIUM L. HELIOTROPE. 



Annual or perennial herbs, or in warmer climates shrubs. Leaves alternate, 

 or rarely opposite, pubescent. Flowers perfect, regular, usually in terminal 

 scorpioid racemes or spikes. Calyx-lobes 5, narrow. Corolla salver-shaped; 

 tube cylindric, usually naked in the throat; lobes 5, induplicate or imbricate. 

 Stamens 5, included; filaments short; anther-sacs sometimes appendaged at the 



