Eggleston : Crataegi of Mexico and Central America 511 



-4-fruited), pedicels slightly whitish tomentose ; fruit yellow, 

 compressed-globose, 12-18 mm. thick, slightly pubescent ; calyx- 

 lobes appressed, lanceolate, acute, slightly tomentose ; stamens 

 about 20, tomentose about the base ; nutlets 2 or 3, obtuse, strongly 

 ridged on the back, 7-9 mm. long, nest of nutlets 8-10 mm. thick. 

 Young twigs light chestnut-brown, slightly pubescent, becoming 

 gray and glabrous. Thorns numerous, at first chestnut-brown, 

 2—4.5 ^^' ^^^&» nearly straight. In habit like the apple or the 

 hawthorn- 

 Type, E, Pahner 75, Alvarez, San Luis Potosi, Mexico, Sept. 



I 



5-10, 1902. (Herb. U. S. Nat. Mus.) 



0{ this number Dr. Palmer says. *' Tejocote ameco. The fruit 

 of this form is sometimes a little larger than no. 74 \C. Rosei~\, 

 and if it can be a larger crop of fruit. Has a fine odor. A small 

 tree ; 1 5 feet may cover the height of the tallest. It has the habit 



I 



of the hawthorn. Quite thorny. May not the cultivated yellow 

 ones of San Luis Potosi originate here?" He also told me that 

 the locality where he found this species and no. 74, in the moun- 

 tains about twenty miles southeast of the city of San Luis Potosi, 

 had the greatest number of individual trees of any place he had 

 seen, and was also the only place that he would be sure that Cra- 

 taegus was wild in Mexico. 



Dr. Pringle, however, says that although Crataegus is fre- 

 quently cultivated in the Mexican gardens, still a great many of 

 the seemingly cultivated trees are undoubtedly in their native 



habitats. 



Crataegus Gregg 



C. piibcscens Watson, Proc. Am. Acad. 17: 354. 1882. Not 

 Mcspilns pnbescens H.B.K. 



Leaves 2-7.5 ^"^' ^°"to» ^-6 cm. wide, broadly ovate to ellip- 

 tical-ovate, tomentose on both sides, becoming scabrous above, 

 finely and doubly serrate, or lobed towards the apex, with often 

 irregular lobes, acute or obtuse at the apex, broadly cuneate at the 

 base, subcoriaceous, dull; petioles 5 mm. long, tomentose; 

 corymbs 4-8-flowered, corymbs and calyx densely white-tomen- 

 tose, calyx -lobes lanceolate, acuminate, remotely and irregularly 

 serrate, about 6 mm. long; stamens about 10; styles 3-5; fruit 

 brick-red, about 10-12 mm. thick, globose, tomentose; calyx- 

 lobes appressed, persistent ; nutlets usually 4 or 5, grooved on 

 the back, with a conspicuous calyx-scar, ^-J mm. long, nest of 

 nutlets 7-9 mm. thick. Twigs tomentose, becoming glabrous. 

 Thorns numerous, straight, slender, chestnut-brown, 3-6 cm. long. 



