STANDLEY TBEES AND SHEUBS OF MEXICO 1383 



4. Machaonia pringlei A. Gray, Proc. Amer. Acad. 21: 380. 1886. 

 Type from mountains near Jimulco, Coahuila. 



Shrub, 1 to 2 meters high; leaves short-petiolate, 3 to 6 cm. long, long-attenuate 

 at each end, glabrous; cymes 3 to 6.5 cm. broad; corolla 4 mm. long. 



5. Machaonia floribunda Greenm. Proc. Amer. Acad. 33: 488. 1898. 

 Type collected near Tampico, Tamaulipas. 



Shrub or small tree, 3 to 4.5 meters high; leaves short-petiolate, 3 to 5 cm. long, 

 acute or acuminate, glabrous beneath or sparsely puberulent along the costa; 

 inflorescence much branched, 5 to 7 cm. wide; corolla white, 2 mm. long. 



6. Machaonia lindeniana Baill. Bull. Soc. Linn. Paris 1: 204. 1879. 

 Campeche and Yucatdn; type from Campeche. 



Shrub or tree, 4 to 9 meters high; leaves short-petiolate, 2 to 4 cm. long, obtuse 

 to short-acuminate, short-barbate beneath in the axils of the nerves, elsewhere 

 glabrous; inflorescence 4 to 7 cm. broad; corolla ochroleucous, 3 mm. long; fruit 

 2 to 2.5 mm. long. 



DOUBTFUL SPECIES. 



Machaonia galeottiana Baill. Bull. Soc. Linn. Paris 1: 204. 1879. Type 

 from Veracruz. 



29. CHOMELIA Jacq. Enum. PL Carib. 1. 1760. 

 Shrubs, often armed with spines; flowers small, white or yellow, usually in axil- 

 lary pedunculate cymes; calj^x limb 4-lobate, the lobes persistent; corolla salver- 

 form or funnelform, the tube slender, elongate, the 4 lobes valvate or subimbri- 

 cate; fruit drupaceous, osseous, 2-celled, the cells 1-seeded. 



Corolla lobes long, attenuate; plants usually armed with spines 1. C. spinosa. 



Corolla lobes short, obtuse; plants unarmed. 



Corolla tube 15 mm. long 2. C. barbata. 



Corolla tube 10 mm. long or less. 



Calyx lobes oblong or linear, 1 to 1.5 mm. long; leaves pubescent beneath 



with spreading hairs 3. C. pringlei. 



Calyx lobes minute, as broad as long; leaves sericeous beneath, at least 

 along the veins 4. C. protracta. 



1. Chomelia spinosa Jacq. Stirp. Amer. 18. 1760. 

 Guettarda armata Bartl. ; DC. Prodr. 4: 457. 1830. 



Chomelia fili pes Benth.; Oerst. Nat. For. Kjobenhavn Vid. Medd. 41. 1852. 



Anisomeris purpusii T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 70. 1914. 



Oaxaca and Chiapas. Central America and Colombia; type from Cartagena, 

 Colombia. 



Shrub, armed at the axils with long stout spines; leaves petiolate, rounded-ovate 

 to oblong-ovate, 4 to 8 cm. long, rounded to short-acuminate at apex, pilose 

 beneath, especially along the veins; cymes few-flowered; calyx lobes lanceolate; 

 corolla sericeous, the tube 12 to 22 mm. long; fruit 9 to 12 mm. long. 



2. Chomelia barbata Standi. Journ. Washington Acad. Sci. 13: 7. 1923. 

 Type from Chacahua, Distrito de Juquila, Oaxaca. 



Leaves slender-petiolate, the blades eUiptic, 3.5 to 5.5 cm. long, obtuse or 

 acutish, rounded to acute at base, densely barbate beneath along the costa; cj^mes 

 few-flowered, on very slender peduncles; calj'x lobes minute; corolla appressed- 

 pilosulous; fruit white, 2-celled, oblong, 1 to 1.5 cm. long. 



3. Chomelia pringlei S. Wats. Proc. Amer. Acad. 26: 137. 1891. 

 Type from Tamasopo Canyon, San Luis Potosf. 



Shrub or small tree, 4.5 meters high; leaves short-petiolate, elliptic or oval, 

 4.5 to 7.5 cm. long, acute or short-acuminate; cymes 3 to 6-fiowered; corolla 8 to 

 9 mm. long, short-pilose; fruit 5 to 6 mm. long. 



