1382 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



10. Hoffmannia conzattii Robinson, Proc. Amer. Acad. 45: 406. 1910. 

 Type from Colonia Melchor Ocampo, Veracruz, altitude 1,200 meters. 

 Glabrous shrub; leaves petiolate, 11 to 16 cm. long, long-attenuate at base, 



paler beneath; cj^mes about 6-flowered; corolla 6 mm. long. 



11. Hoflfmannia strigillosa Hemsl. Diag. PI. Mex. 31. 1879. 

 Described from Mexico, the locality not known. 



Shrub; leaves short-petiolate, 15 to 20 cm. long, long-attenuate at base; 

 cymes few-flowered. 



28. MACHAONIA Humb. & Bonpl. PI. Aequin. 1: 701. 1808. 

 Shrubs or small trees; flowers small, white or whitish, the inflorescence ter- 

 minal; calyx tube compressed, the limb 4 or 5-lobate, the lobes persistent; 

 corolla short-funnelform, the throat villous, the 4 or 5 lobes rounded, imbricate; 

 fruit oblong or obpyramidal, compressed, dicoccous, the cells indehiscent, 

 1 -seeded. 



Leaves oblong-linear or linear-oblanceolate, less than 4 mm. wide, mostlj^ fasci- 

 culate 1. M. coulteri. 



Leaves broader than oblong-linear, 5 to 35 mm. broad, opposite or ternate. 

 Leaves copiously short-pilose or puberulent beneath. 



Calj'x lobes longer than broad, acute or acutish 2. M. velutina. 



Calj'x lobes as broad as long, rounded 3. M. acuminata. 



Leaves glabrous beneath or nearly so. 



Calyx lobes glabrous, not ciliolate, usually truncate; leaves linear-lanceolate. 



4. M. pringlei. 

 Calyx lobes puberulent or ciliolate, not truncate; leaves mostly ovate or 

 elliptic. 

 Tube of the calyx densely covered with minute whitish apprcsscd hairs, 



the lobes ovate, as long as the corolla tube 5. M. floribunda. 



Tube of the calyx sparsely pilose with short spreading hairs or glabrate, 

 the lobes obovate, shorter than the corolla tube 6. M. lindeniana. 



1. Machaonia coulteri (Hook, f.) Standi. Contr. U. S. Nat. Herb. 20: 209. 1919. 

 Microsplenium coulteri Hook. f. in Benth. «fe Hook. Gen. PI. 2: 4. 1873. 

 Machaonia fasciculata A. Gray, Proc. Amer. Acad. 19: 77. 1883. 

 Quer^taro and Hidalgo; type from Zimapdn, Hidalgo. 



Unarmed shrub; leaves subsessile, 5 to 16 mm. long, rounded or obtuse at 

 apex, sparsely short-pilose or^labrous; inflorescence few or many-flowered, 1 to 

 2.5 cm. broad; calyx lobes orbicular; corolla yellowish, 4 to 5 mm. long. "Huele 

 de noche del campo" (Quer^taro). 



2. Machaonia velutina Mart. & Gal. Bull. Acad. Brux. 11': 134. 1844. 

 Machaonia veracruzeana Baill. Bull. Soc. Linn. Paris. 1: 204. 1879. 

 Machaonia hahniana Baill. Bull. Soc. Linn. Paris. 1: 204. 1879. 

 Veracruz; type from Puente Nacional. 



Shrub, usually unarmed; leaves petiolate, broadly ovate to oblong-ovate, 2.5 

 to 3.5 cm. long, acute or short-acuminate; cymes 2.5 to 5 cm. broad; corolla 

 ochroleucous; fruit 4 to 5 mm. long. 



3. Machaonia acuminata Humb. & Bonpl. PI. Aequin. 1: 101. 1808. 



Veracruz and Tabasco. Panama and South America; type from Ecuador. 



Shrub or tree, sometimes 10 meters high; leaves short-petiolate, ovate or ovate- 

 elliptic, 5 to 10 cm. long, acute or short-acuminate, tomentulose or short-pilose 

 beneath; inflorescence much branched, 6 to 10 cm. broad; corolla 4 to 5 mm. 

 long; fruit 5 mm. long. 



