STANDLEY TREES AND SHRUBS OF MEXICO. 747 



Seed 1 In each cell. 



Bractlets connate 12. LAVATERA. 



Bractlets distinct 13. MALVASTRUM. 



Bractlets none at the base of the calyx. 

 Seeds 2 or more in each cell. 

 Carpels of the fruit winged. 

 Carpels each with a dorsal wing above, and with crests along the 



margins 1. BAKERIDESIA. 



Carpels each with 2 lateral wings 2. HORSFORDIA. 



Carpels not winged. 

 Carpels 1-celled. 



Carpels each with 2 retrorse spines below 3. NEOBRITTONIA. 



Carpels without spines below 4. ABUTILON. 



Carpels imperfectly 2-celled. 



Carpels usually 5, imperfectly 2-celled by the lateral constriction of 



their walls 5. WISSADULA. 



Carpels 5 to 11, a free partition projecting from the dorsal wall. 



6. PSEUDABUTILON. 

 Seed 1 in each cell. 



Fruit a loculicidal 5-celled capsule 7. BASTARDIA. 



Fruit of 5 or more carpels, these separating at maturity. 



Dorsal wall of the carpels separating at maturity from the lateral 



walls 8. GAYA. 



Dorsal wall not separating from the lateral walls. 

 Carpels membranaceous, inflated at maturity. 



9. ROBINSONELIiA. 

 Carpels thick, not inflated 10. SIDA. 



1. BAKERIDESIA Hochr. Ann. Cons. Jard. Bot. Geneve 15-16: 298. 1913. 

 The following is the only known species of the genus. 



1. Bakeridesia galeottii (Baker f.) Hochr. Ann. Cons. Jard. Geneve 15-16: 

 298. 1913. 



Abutilon galeottii Baker f. Journ. Bot. Brit. & For. 31: 73. 1893. 



Described from Veracruz. 



Stems woody ; leaves petiolate, broadly ovate-cordate, 3 to 8 cm. long, acu- 

 minate, entire, puberulent ; flowers axillary, solitary or geminate, long-peduncu- 

 late ; calyx stellate-puberulent ; corolla yellow, 2.2 cm. long ; fruit of about 13 

 carpels, these each with a broad dorsal wing above, the margins sinuate- 

 cristate. 



2. HORSFORDIA A. Gray, Proc. Amer. Acad. 22: 296. 1887. 

 Shrubs or large herbs, with stellate pubescence ; peduncles axillary, 1-flow- 

 €red, or sometimes paniculate ; bractlets none ; fruit of 8 to 12 coalescent 

 carpels, these 1 to 3-seeded, the upper portion accrescent and developing 2 

 wings. 



L,eaves rounded-cordate, 1.5 to 2.5 cm. long, usually as broad as long. 



1. H. rotundifolia. 

 Leaves cordate-ovate to lanceolate, mostly 3 to 7 cm. long, much longer than 

 broad. 



liCaves chiefly lanceolate ; carpels 2 or 3-seeded 2. H. newberryi. 



Leaves ovate or broadly ovate ; carpels 1-seeded 3. H. alata. 



1. Horsfordia rotundifolia S. Wats. Proc. Amer. Acad. 24: 40. 1889. 

 Horsfordia purisimae T. S. Brandeg. Proc. Calif. Acad. II. 2: 135. 1889.. 

 Baja California and Sonora ; type from Guaymas, Sonora. 



