422 CRAT^GUS 



the upper part toothed, and either pointed or rounded ; I to 2 ins. long, f to i| 

 ins. wide ; dark glossy green, with flattened hairs above, eventually smooth ; 

 permanently more or less downy beneath ; stalk J to. 3- in. long, downy at first. 

 Flowers white, in. across, borne during May and June in small, few-flowered 

 corymbs. Flower-stalks and calyx-tube "hairy ; calyx-lobes linear, toothed, 

 smooth outside, hairy inside ; stamens up to twenty, anthers yellow ; styles 

 two or three. Fruits yellowish red, in. diameter. 



Native of the southern United States, with an apparently restricted habitat 

 in Louisiana. It has been cultivated at Kew since 1878, and, in spite of its 

 southern habitat, is quite hardy. It is, however, one of the inferior thorns, 

 although it is of the Crus-galli group, and was once regarded as a variety of 

 that species. The yellow anthers and downiness of the younger parts amply 

 distinguish it from C. Crus-galli. 



C. BRACHYACANTHA, Sargent. POMETTE BLEUE. 



A deciduous tree, described by Sargent as 40 to 50 ft. high, forming a 

 broad, compact, round-topped head ; young shoots slightly downy at first, soon 

 smooth ; thorns sturdy, |- to i|- ins. long. Leaves oval or ovate, I to 2 ins. 

 long, about half as wide, tapered at the base, shallowly round-toothed, glossy 

 dark green, smooth except on the upper surface when young. On vigorous 

 barren shoots, the leaves are often of almost triangular shape, and truncate or 

 even heart-shaped at the base, with stipules i in. long. Flowers small, the 

 petals turning orange-coloured with age ; flower-stalks and outside of calyx 

 smooth ; calyx-lobes not toothed ; stamens fifteen to twenty ; styles three to 

 five. Fruit roundish, bright blue, covered with a blue-white bloom, \ to \ in. 

 across. 



Native of the southern Central United States ; introduced in 1900. The 

 most remarkable character of this thorn is the bright blue fruit. Whether it 

 will thrive well enough to bear fruit in this country, has yet to be proved. It 

 belongs to Sargent's group " Brachyacanthae," or the short-spined Crataegus, 

 to which also belongs 



C. SALIGNA, Greene, introduced in 1902. This is a native of Colorado, at 

 6000 to 8000 ft. altitude, and promises to be perfectly hardy with us. Its 

 smooth, reddish young shoots are armed with thorns f in. or more long. Fruit 

 globose, shining, j in. across, red, finally blue-black. A tree 20 ft. high, with 

 firm-textured, deep green, smooth and glossy leaves up to 2 ins. long and i in. 

 wide, ovate-lanceolate or oval. 



C. CARRIEREI, Vauvel. 



(C. Lavallei, Herincq.~) 



A tree of sturdy, leafy habit up to 15 or 20 ft. high ; young shoots downy, 

 sometimes retaining the down until the second season ; thorns few, stout, 

 i to i^ ins. long. Leaves obovate or oval, tapered at both ends, i^ to 4^ ins, 

 long, i to 2^ ins. wide ; coarsely and irregularly toothed, glossy dark green 

 above and soon smooth except along the midrib ; permanently downy beneath, 

 especially on the midrib and veins ; stalk J to f in. long. Flowers white, 

 nearly i in. across, produced in June in erect corymbs about 3 ins. in diameter. 

 Flower-stalks and calyx very woolly, the lobes of the latter glandular-toothed, 

 linear-lanceolate ; stamens twenty ; styles one to three. Fruits orange-red 

 specked with brown, globose with a pear-shaped base, f in. wide, persisting 

 through the winter. 



The origin of this fine thorn is uncertain. Mr Carriere (Revue Horticole^ 

 1883, p. 108) says it came from seed of C. mexicana (i.e. C. stipulacea), and 

 C. Carrierei as we know it to-day certainly bears a strong resemblance to that 



