336 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



Tree, 3.5 to 5.5 meters high; leaves elliptic-oval, 3 to 7 cm. long, serrate and 

 shallowly lobed, bright green ; fruit about 1 cm. in diameter. 



2. Crataegus gregg-iana Eggleston, Bull. Torrey Club 36: 511. 1909. 

 Coahuila ; type from Saltillo. 



Tree, 4.5 to 6 meters high, the trunk 15 to 30 cm. thick ; spines 7 cm. long or 

 shorter ; leaves 4 to 7 cm. long, coarsely serrate. 



3. Crataeg'us rosei Eggleston, Bull. Torrey Club 36: 509. 1909. 



Chihuahua to San Luis PotosI and Durango; type from AlvS,rez, San Luis 

 Potosf. 



Shrub or small tree, 3 to 9 meters high, the trunk up to 37 cm. in diameter; 

 leaves 2.5 to 4 cm. long, serrate, lustrous ; fruit often 1.5 cm. in diameter. 



Wood white, tough, and durable; used for tool handles. 



4. Crataegus pubescens (H. B. K.) Steud. Norn. Bot. ed. 2. 433. 1841. 

 Mespilus pubescens H. B. K. Nov. Gen. & Sp. 6: 213. pi. 565. 1824. 

 Crataegus puhescens hotterii Eggleston, Bull. Torrey Club 26: 506. 1909. 

 Veracruz, Hidalgo, and Oaxnca ; type from Mor^n, Hidalgo. 



Tree, sometimes 10 meters high ; leaves 3 to 8 cm. long, finely serrate or on 

 young branches deeply lobate ; fruit about 12 mm, long. 



5. Crataegus stipulosa (H. B. K.) Steud. Nom. Bot. ed. 2. 433. 1841. 

 Mespilus stipulosa H. B. K. Nov. Gen. & Sp. 6: 213. 1824. 

 Chiapas. Guatemala to Ecuador (type locality). 



Tree; leaves 4 to 8 cm. long, acute or obtuse, tomentose beneath, finely ser- 

 rate ; fruit sometimes 2.5 cm. in diameter. 



6. Crataegus parryana Eggleston, Bull. Torrey Club 36: 510. 1909. 

 Known only from the type locality, Alvarez, San Luis PotosI. 

 Shrub or small tree, up to 4.5 meters high. " Tejocote ameco." 



7. Crataegus mexicana Moc. & Sesse; DC. Prodr. 2: 629. 1825. 

 Crataegus subserrata Benth. PI. Hartw. 10. 1839. 

 Crataegus hypolasia Koch, Hort. Dendr. 167. 1853. 

 Crataegus mexicana microsperma Eggleston. Bull. Torrey Club 36: 508. 1909. 

 San Luis PotosI to Jalisco, Oaxaca, and Veracruz. 



Tree about 6 meters high ; spines often very large and stout ; leaves thick, 

 lustrous, serrate or shallowly lobate ; fruit 1 to 2 cm. in diameter. " Manza- 

 nita tejocotera " (Oaxaca). 



8. Crataegus nelsoni Eggleston, Bull. Torrey Club 36: 512. 1909. 



Known only from the type locality near San Crist6bal, Chiapas, altitude 2,100 

 to 2,640 meters. 



Spines stout, 4 to 6 cm. long; leaves lustrous, serrate and shallowly lobate. 



2. PHOTINIA Lindl. Trans. Linn. Soc. Bot. 13: 103. 1821. 

 1. Photinia mexicana (Baill.) Hemsl. Biol. Centr. Amer. Bot. 1: 380. 1880. 



Chamaemeles mexicana Baill. Adansonia 9: 148. 1869. 



In forests, mountains of Veracruz and Oaxaca ; type from Veracruz. 



Tree, about 9 meters high ; leaves oblong, elliptic, or oval, 5 to 12 cm. long, 

 petiolate, rounded to acutish at apex, shallowly crenate, thick, bright green, 

 lustrous ; flowers cymose-paniculate, brown-tomentose ; fruit subglobose, usually 

 3 to 4 cm. in diameter, rough, tomentose when young ; seeds dark reddish brown, 

 1.5 cm. long. " Peral silvestre " (Oaxaca). 



The fruit somewhat resembles a small pear. It is said to be of good flavor. 

 This plant is probably the one reported by Sess§ and Mocino ' as Crataegus 

 in dica. 



'PI. Nov. Hi.sp. 84. 1887. 



