GREENMAN. — GENUS HOUSTONIA. 2S9 



basal leaves narrowly spatulate, 5 to 8 mm. long; the upper gradu- 

 ally narrowed, hispidulous-puberuleut above, glabrous beneath : pedicels 

 elongated, filiform: flowers small, 4 to 6 mm. long: calyx-divisions 

 short, scarcely 1 mm. in length, obtuse : corolla funnelform : capsule 

 subglobose, Ih mm. long. — Coutrib. U. S. Nat. Herb. i. 70. — Lower 

 California, La Paz, Palmer, no. 31. 



H. aspernloid.es. Gray. Much branched from the base, 5 to 18 

 cm. high : branches divaricately spreading and ascending, inconspicu- 

 ously hispidulous-puberulent or quite glabrous : leaves linear or a little 

 dilated above the middle, 5 to 24 mm. long, glabrous : flowers on slender 

 filiform pedicels: calyx-lobes lance-linear, li to 2 mm. long, acute, 

 slightly unequal : corolla funnelform, about 8 mm. long ; tube below pu- 

 berulent on either surface: capsule clavate-turbinate, tapering below; 

 seeds oblong, peltate, somewhat concavo-convex, minutely scrobiculate. 

 — Proc. Am. Acad. v. 158; Rose, Contrib. U. S. Nat. Herb. i. 70. 

 Hedyotis (Ericotis) asperuloides, Benth. Bot. Sulph. 19, t. 13. — Lower 

 California, Cape St. Lucas, Xantus, no. 43 ; at La Paz, Palmer, nos. 24, 

 31"; and by Brandegee, 5 February, 1890, the latter distributed as 

 Houstonia Brandegeana, Rose. 



H. arenaria, Rose. Erect or ascending, glabrous throughout : stems 

 much branched : upper leaves linear or linear-lanceolate, 1^ to 2 cm. 

 long : stipules short, scarious, laciniate : inflorescence in loose terminal 

 dichotomous cymes with the terminal flower sessile : calyx-lobes about 

 1 mm. long, obtusish, inconspicuously serrulate on the margins : corolla 

 about 4 mm. long, funnelform ; lobes spreading, broadly ovate : capsule 

 obcordate-compressed, 1^ mm. long ; seeds oblong, peltate, slightly con- 

 cavo-convex, scrobiculate. — Contrib. U. S. Nat. Herb. i. 70. — Lower 

 California, La Paz, Palmer, no. 28 ; San Jose del Cabo, Brandegee, 

 no. 261. 



M- -i- Low (lichotomously branched perennials : stems becoming sh'ghtly woody 

 below : ovary one half to three fourths inferior : capsule short-oblong or sub- 

 globose. 



++ Stems rather leafy : capsule about 3 mm. long. 



H. Palmeri, Gray. Erect, profusely branched : branches hirtellous- 

 puberulent or glabrous: leaves linear-filiform, glabrous, 5 to 18 mm. 

 long ; stipules small, subtruncate, minutely dentate, or triangular-acute : 

 pedicels slender, erect or ascending : flowers about 1 cm. long, dimor- 

 phous : calyx-divisions lance-linear, 2 mm. long, ciliate : corolla salver- 

 shaped or slightly funnelform, upper portion of tube pubescent within : 

 free portion of capsule often hirtellous ; seeds open-crateriform, oblong- 



VOL. XXXII. — 19 



