CRATAGUS. POMACE. 163 | 
OrpER XXVIII. POMACE Loiseleur-Deslongchamps Man. 
Pl. Us. i, 211. | 
Trees or shrubs with alternate, simple or unequally pinnate 
leaves, caducous free or nearly free stipules and perfect, regu- 
lar white or reddish flowers in racemes or corymbosely clus- 
tered. Calyx-tube urceolate or campanulate, more or less co-_ 
herent with the ovary, the usuallv short, free portion lined 
with an annular or laminar disk, the limb 5-lobed, imbricate 
in the bud. Petals 5, perigynous. Stamens mostly 20, in- 
serted on the disk of the calyx. Ovary compound, composed 
of 2-5 carpels with two oligo ascending ovules in each, 
becoming a pome; styles as many as the carpels. Seeds usu- 
ally two in each cell, without albumen. 
* Carpels 1-celled, not divided by a partition from the back. 
1. Crategus. Fruit drupaceous: ovary 2-5-celled,* becoming 2-5 1- 
- seeded nutlets, either separable or united into one. 
2. Sorbus. Shrubs or small trees with unequally pinnate leaves: fruit 
a proper pome, with coriaceous undivided 1-seeded cells. 
3. Malus. Trees or shrubs with simple leaves: fruit a proper pome with 
chartaceous 2-seeded undivided cells. 
* * Carpels more or less spuriously 2-celled by a partition from the 
back of each carpel. 
4, Amelanchier.> Shrubs or small trees with simple™leaves: fruit a 
proper pome, 5-carpeled or by abortion 3 or 4-carpeled: carpels coherent, - 
incompletely 2-celled by a partition from the back. 
5. Peraphyllum. Small shrubs with simple leaves: fruit a*® proper’ 
pome; 2- rarely 3-carpeled; carpels nearly distinct, 2-celled by a par- 
tition from the back. 
1 CRATAGUS Tourn. L. Gen. n. 622. 
Thorny shrubs or small trees with simple toothed or lobed 
leaves, and mostly white, heavy-scented flowers in terminal 
corymbs. Calyx-tube urceolate, the limb 5-parted. Petals 5, 
spreading. Stamens 5-20. Carpels 2-5, becoming bony 1- 
seeded nutlets, contiguous or united: styles distinct. Fruit 
drupe-like, globose or ovoid, crowned with the calyx-teeth.4 { 
C. Douglasii Lindl. Bot. Reg. t.1810. C. rivularis Nutt. (?). A stout 
shrub or small tree, 20-40 feet high: spines stout, 6-12 lines long: leaves 
elliptical to obovate, usually cuneate at base, irregularly serrate, those of 
the young shoots often incisely lobed, 1-3 inches long, somewhat pubes- 
cent on both sides: inflorescence tomentose; lobes of the calyx entire, a 
line long, about half as long as the tube, pubescent inside; petals orbicu- 
lar, 3-4 lines long: fruit black, 4-5 lines in diameter, often only 3-carpeled; 
carpels distinct. Along water courses, Brit. Columbia to California, west 
of the Cascade Mountains. 
C. Columbiana. A much branched shrub orsmall tree, 6-15 feet high : 
spines stout, 1-2 inches long: leaves. cuneate-obovate, 1-2 inches long, 
incisely 5-9-lobed above the middle, acute, serrate, the teeth often yland- 
tipped, especially below, sparingly pubescent or glabrate, attenuate below 
to a short petiole: corymbs rather many-flowered, sparingly pubescent or | 
