1048 CONTEIBUTIONS FROM THE NATIONAL HERBAEIUM. 



Leaves longitudinally 3 to 9-nerved. 

 Leaves closely transverse-striolate between the primary nerves. 



Filaments very thick; anthers short, obtuse 22. BLAKEA. 



Filaments filiform; anthers subulate 23. TOPOBEA. 



Leaves not striolate. 

 Inflorescence terminal. 



Petals acute 14, LEANDEA. 



Petals obtuse. 



Calyx limb calyptriform, circumscissile 15. CONOSTEGIA. 



Calyx limb truncate or lobate, open in bud, not circumscissile. 



Outer caljTC lobes none or inconspicuous 16. MICONIA. 



Outer calyx lobes larger than the inner ones. 



17. HETEE-OTRICHUM. 

 Inflorescence axillary or lateral. 



Petals acute 18. OSSAEA. 



Petals obtuse. 

 Leaves with large inflated bladder-like appendages at base. 



19. MAIETA. 

 Leaves not appendaged. 



Anthers linear-subulate, with 1 pore at apex 20. CUDEMIA. 



Anthers short, obtuse, with 2 pores at apex 21. BELLTJCLA.. 



1. KHYNCHAITTHERA DC. Prodr. 3: 106. 1828. 



1. Rhynchanthera mexicana DC. Prodr. 3: 108. 1828. 



Rhijnchanthera insignis Naud. Ann. Sci. Nat. III. 12: 210. 1849. 



V^eracruz and perhaps elsewhere. Panama. 



Slender shrub, the branches glandular-hirtellous, terete; leaves long-petio- 

 late, lanceolate or ovate-oblong, 6 to 14 cm. long, long-acuminate, 7 or 9-nerved, 

 rounded or subcordate at base, hispidulous, serrulate; flowers in axillary 

 cymes; calyx tube 5 mm. long, the lobes subulate, 5 to 9 mm. long; petals 

 purple-violet, 3 cm. long, acutish ; stamens 10, one of them much larger than 

 the others, rostrate; capsule subglobose, 5 to 7 mm. in diameter. 



2. CENTRADENIA G. Don, Hist. Dichl. PI. 2: 755. 1832. 



Herbs or small shrubs, alternately branched; leaves petiolate, very unequal 

 at base, entire ; flowers small, pink or white, in corymbiform cymes, 4-parted ; 

 petals obovate or rounded; stamens unequal, the anthers obtuse, the con- 

 nective produced below, bearing a clavate or bilobate appendage; capsule 4- 

 celled. the seeds minute. 



Stems glabrous 1- C. chiapensis. 



Stems puberulent, pilose, or hirtellous. 



Stems glandular-pilose, winged 2. C. grandifolia. 



Stems hirtellous or puberulent. the pubescence not glandular; stems not 

 winged. 



Pedicels glandular-pilose; leaves 1.5 to 3 cm. wide 3. C. salicifolia. 



Pedicels without glandular pubescence ; leaves mostly less than 1 cm. wide. 



4. C. inaequilateralis, 



1'. Centradenia chiapensis T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 501. 1919. 



Known only from the type locality, Cerro del Boqueron, Chiapas. 



Stems 30 cm. high, 4-angulate ; leaves ovate-aciuninate, 13 cm. long and 4 cm. 

 wide or smaller, cuueate at base, hirtellous above, pilose beneath along the 

 nerves; caljTs: 6 mm. long, glabrous; petals 4 mm. long. 



