466 BOTANY. 



§ 2. LINANTHUS, Endl. Corolla salverform, the tube about equaling the oyUudrio calyx-tube, the 

 broad ouneate-obovate lobes usually minutely erose ; stamens included ; filaments slender, inserted 

 near the middle of the tube ; capsule cylindric or oblong ; cells 20-40-ovuled. Erect, slender, 

 glabrons annuals ; leaves opposite, filiform, 3-5-divided or sometimes simple ; flowers white, sub- 

 seasile, terminal and in the forks ; calyx scaribus except the elongated acerose-linear ribs. 



7. G. DICHOTOMA, Benth. Corolla-lobes J-1' long; anthers linear; seeds with a white finely reticu- 

 lated uou-mucilaginous coat. — California. 



8. G. BiGELOVii, Gray. Corolla-lobes 2" long, hardly exceeding the calyx ; anthers oval, seed-coat 

 close, mucilaginous. See page 263 and Plate XXV. 



§ 3. LEPTOSIPHON, Endl. CoroUa salverform with usuaUy a long filiform tube and very short 

 more or less cup-shaped throat, in which the stamens are inserted ; anthers short ; ovules 6-16 in 

 each cell. Low or slender annuals, with opposite narrow leaves and showy flowers in crowded 

 bracteate clusters. 



• Hairy, leafy-stemmed ; leaves palmately 5-7-parted, with linear-filiform lobes, commonly fascicled 

 in the axils ; corolla-lobes entire, exceeding the slender more or less exserted filaments ; cells 

 6-10-ovuled. 



{a.) Corolla large, the tube scarcely exceeding the obovate lobes and rarely the villous-hirsute 

 bracts. 



9. G. DENSIFLORA, Benth. 1-2° high; leaflets numerous, subrigid; corolla-limb 1' in diameter, lilac 

 or nearly white ; anthers nearly included. — W. California. 



(6.) Small and more slender, the filiform corolla-tube 3-6 times exceeding the oval or ovate (li-4'' 

 long) lobes. (Species difficult of definition.) 



10. G. ANDK08ACBA, Stcud. Corolla-tube 1' long or less, much exserted and thrice longer than the 

 lobes ; bracts hirsute or villous-ciliate. See page 263. 



11. G. MICRANTHA, Steud. CoroUa-tube extremely slender, J-li' long, 4-6 times exceeding its (2-3" 

 long) lobes ; bract and floral leaves softly pubescent. See page 264. 



12. 6. TBNELLA, Benth. Small, mostly depressed, corolla-tube less slender, 6-9" long, lobes 1^" long ; 

 bracts and leaves rather hispid-ciliate. — Puget Sound to S. California. 



13. G. CILIATA, Benth. More rigid, rough ; corolla-tube 6-7" long, scarcely exserted ; lobes IJ" long ; 

 bracts and leaves very hirsute-ciliate ; calyx-lobes acerose. See page 264. 



* ' Entire-leaved, glabrous, dwarf; corolla-lobes cuneate, undulate-toothed or 1-3-dentate at the 

 broad apex; anthers sessile, included in the throat ; cells 10-16-ovuled. 



14. G. NUDiCAULis, Gray. 1-4' high ; stem naked, the capitate flowers bracteate with several ovate- 

 lanceolate or lanceolate leaves ; corolla-tube 3-4" long, the lobes 2-3" long. See page 264. 



5 4. SIPHONELLA, Gray. Like Leptosiphon, but the corolla-tube not exceeding the narrow calyx, 

 the throat more funnelform, the cells few-ovuled, and the flowers less crowded. Perennials, some- 

 times woody at base, soft-puberulent ; calyx firm, becoming 5-parted, the lance-suhulate lobes with 

 thickish margins, the sinuses not membranous nor scarious ; corolla nearly white, the tube puber- 

 ulent, lobes obovate ; filaments short, subexserted ; anthers oval-oblong. 



15. G. NuTT.\XLii, Gray. Stems numerous, slender, 6-12' high; leaves 3-7-parted, narrow linear, 

 mucronate, usually shorter than the internodes ; flowers in leafy clusters; ovules in pairs. See page 264 

 and Plate XXV. 



16. G. FLORIBUNDA, Gray. 1° high or more ; base more shrubby ; leaflets nearly acioular, usually 

 equaling the internodes ; flowers in a rather loose corymbose cyme, sometimes pedicelled ; cells 4-ovuled. — 

 S. California and Arizona. 



5 5. LEPTODACTYLON, Benth. Corolla salverform, the tube at length exceeding the calyx, the 

 throat somewhat funnelform ; anthers short, on short filaments inserted near the throat, included ; 

 ovules numerous ; seed-coat close, without mucilage or spiricles. Tufted leafy suffrutesceut peren- 

 nials ; leaves alternate or opposite, fascicled in the axils, palmately 3-7-parted, the entire segments 

 and the calyx-lobes acerose or subulate, pungent ; flowers sessile, solitary upon the short branch- 

 lets or in few-flowered terminal clusters. 



* Leaves opposite ; stems short, herbaceous. 



17. G. Watsoni, Gray. 4-6' high ; leaves not much fascicled ; corolla-tube and lobe each i' long ; 

 cells 10-ovuled. See page 265 and Plate XXVL 



* * Leaves alternate, more rigid, thickly fascicled in the axils ; stems woody. 



18. G. Califoknica, Benth. Leaves very close, becoming widely spreading, and with the branches 



