STANDLEY — TREES AND SHRUBS OF MEXICO. 777 



The specimens placed here show great variation in leaf form, but the varia- 

 tion upon a single plant is nearly as great as in the whole series of specimens. 

 6. Kosteletzkya dig-itata A. Gray, Proc. Amer. Acad. 8: 289. 1870. 



Known only from the type locality, Yaqui River, Sonora. 



Leaves with linear denticulate lobes, or some of the leaves simple; flowers 

 long-pedicellate, purplish, 8 to 10 mm. long; seeds glabrous. 

 r. Kosteletzkya sagittata Presl, Rel. Haenk. 2: 131. ;;?. 10. 1836. 



Kosteletzkya stellata Fernald, Bot. Gaz. 20: 532. 1895. 



Sinaloa to San Luis PotosI, Veracruz, and Guerrero. Reported from the West 

 Indies and northern South America. 



Leaves very variable, from linear-oblong to deltoid, often hastate-lobate or 

 even 3 or 5-lobate, serrate or dentate, green ; petals white or pink ; seeds minutely 

 pubescent. 



DOUBTFUL SPECIES. 



Kosteletzkya madkensis Jones, Contr. West. Bot. 12: 4. 1908. 



17. HIBISCUS L. Sp. PI. 693. 1753. 

 Reference: Hochreutiner, Revision du genre Hibiscus, Ann. Cons. Jard. 

 Geneve 4: 23-191. 1900. 



Shrubs or small trees, sometimes herbs, the pubescence chiefly of stellate 

 hairs ; leaves often lobed or parted ; flowers chiefly axillary, of various colors ; 

 bractlets usually numerous ; fruit a 5-valvate capsule ; seeds glabrous or hairy. 

 Hibiscus maniliot L., a species with large yellow flowers and with leaves 

 divided into narrow lobes, is sometimes cultivated in Mexico under the names 

 " pajiza " and " viudas." The okra (" chimbombo," " quimgombo " ) , Hibiscus 

 esculentus L., also is cultivated. 

 Bractlets bifurcate at the apex. 



Stems and petioles aculeolate 1. H. bifurcatus. 



Stems and petioles not aculeolate. 



Leaves stellate-hispid beneath 2, H. costatus. 



Leaves minutely stellate-pubescent beneath 3. H. furcellatus. 



Bractlets not bifurcate. 



Petals red, erect, convolute. Corolla 2 to 3.5 cm. long. 



Bractlets spatulate, obtuse 4. H. nelsoni. 



Bractlets linear, acute. 



Leaves rounded or broadly cuneate at base, not lobate 5. H. spiralis. 



Leaves truncate or subcordate at base, usually shallowly hastate-lobate. 



6. H. tubiflorus. 

 Petals not red, spreading. 



Bractlets 2.3 to 8 mm. wide, ovate, lanceolate, spatulate, or broadly linear. 

 Leaves glabrous beneath or essentially so, all or most of them deeply 



lobate 7. H. sabdarifiEa, 



Leaves densely pubescent beneath, very shallowly or usually not at all 

 lobate. 



Bractlets united to the middle or higher 8. H. tiliaceus. 



Bractlets free or nearly so. 



Flowers 5.5 to 6 cm. long; bractlets broadly linear; leaves mostly 



7 to 25 cm. wide 9. H. clypeatus. 



Flowers 2.5 to 3.5 cm. long; bractlets spatulate, or lanceolate and 

 contracted at base ; leaves mostly 2 to 7 cm. wide. 

 Bractlets spatulate, obtuse; calyx about 12 mm. long. 



10. H. lavateroides. 

 Bractlets lanceolate, acuminate; calyx about 20 mm. long. 



11. H. cardiophyllus. 



