184 JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



Ohio. Franklin County, roadsides near Columbus, R. E. Horsey and 

 J. H. Schaffner, No. 2330 May 18, 1914; E. R. Horsey, No. 130, September 22, 

 1914; E. R. Horsey, No. 233 (type) May 14, 1915. 



This tree differs from the described species of the Crus-galli Group 

 with 20 stamens and rose colored or pink anthers in its narrow acute thin 

 leaves, slightly villose corymbs and in the erect calyx lobes of the fruit. 



Crataegus Warneri (§ Crus-galli), n. sp. 



Leaves ovate to oval or obovate, rounded or acute and short-pointed 

 at apex, gradually or abruptly narrowed and cuneate at base, and coarsely 

 serrate above the middle with straight gland-tipped teeth, nearly fully 

 grown when the flowers open and then covered above with short white 

 hairs and villose below along the midrib and primary veins, and at maturity 

 thin, dark green and glabrous or occasionally still villose on the midrib 

 above, pale and still villose below along the slender midrib and primary 

 veins, 3.5-5 cm. long and 2.5-3.5 cm. wide; petioles stout, wing-margined 

 to the base, densely villose at maturity, 5-7 mm. in length; leaves on 

 vigorous shoots broad-ovate to semiorbicular, short-pointed at the rounded 

 or acute apex, rounded and gradually narrowed below into a broad wing 

 extending nearly to the base of the short petiole, more coarsely serrate, 

 subcoriaceous, roughened above, 4.5-6 cm. long and broad, with a stout 

 midrib and primary veins villose below. Flowers opening from the 10th 

 to the middle of April, 1-1.2 cm. in diameter, on stout densely villose 

 pedicels in compact many-flowered villose corymbs; calyx-tube narrow - 

 obconic, thickly covered with matted pale hairs, the lobes narrowed from 

 a broad base, slender, acuminate, glandular-serrate, slightly villose on the 

 outer surface, puberulous on the inner surface; stamens 10; anthers red- 

 purple; styles 2, rarely 3. Fruit ripening late in September, on slightly 

 villose pedicels, ellipsoidal to subglobose, orange-red, 6 9 mm. long, the 

 calyx little enlarged with a short tube and a wide shallow cavity flat in 

 the bottom and with spreading often deciduous lobes; nutlets c 2 or 3, 

 rounded at the ends, ridged on the back with a broad deeply grooved 

 ridge, 4 mm. long and 3.5-4 mm. wide, the narrow hypostyle extending 



to the middle. 



A tree 7-8 m. high, with a slender stem covered with dark bark scaly 

 near the base, erect branches forming a narrow head, and slender branch- 

 lets red-brown and covered with pale hairs when they first appear and 

 dull gray and glabrous in their second year, and armed with occasion; 

 stout or slender chestnut-brown spines 3 4 cm. long; or a shrub 3 or 4 m. 



tall. 



Texas. Walker County, Huntsville, E. J. Palmer, No. 12037, May 24, 

 1917, April 18, 1918; R. S. Warner, April! 2, 1918. Cherokee County, Larissa, 

 E. J. Palmer, No. 13346, April 1(3, 1918, No. 14446, September IS, 1918- And- 

 erson County, Palestine, E. J. Palmer, No. 133G0 (type), No. 14445, September 

 17, 1918. 



Extremely rare in the three stations where it has been found, this 



Thorn is arborescent only at Palestine where it grows in woods. In Walker 



