880 



CRATJEGUS 



CRAT^GUS 



of twenty-six species that would give a good fruit dis- 

 play from August until early or mid-winter, would be 

 as follows: Cratsegus matura, C. prxcox, C. Arnoldiana, 

 C. Dayana, C. Robesoniana, C. pedicellata, C. gloriosa, C. 

 Ellwangeriana, C. lauta, C. submollis, C. champlainen- 

 sis, C. arkansana, C. Dunbari, C. ferentaria, C. opulens, 

 C. compta, C. gemmosa, C. livoniana, C. geneseensis, C. 

 persimilis, C. maineana, C. Barryana, C. coccinioides, C. 

 leiophylla, C. durobrivensis, and C. cordata. (See pp. 

 887-889 for some of these.) J OHN DUNBAR. 



INDEX. 



KEY TO THE SPECIES. 



A. Veins of the Ivs. extending to the points 

 of the lobes or to the teeth only; Ivs. 

 usually slightly or not lobed: fr. not 

 black or blue, except in No. 37. 

 B. Stones plain on the inner surfaces. 

 c. Petioles elongated, usually slender. 

 D. The petioles glandular at the apex 

 or sparingly glandular through- 

 out. 



E. Corymbs many-fld.: petioles 

 glandular only at the apex: 

 Ivs. broad at the base, trun- 

 cate to broadly cuneate. 

 P. Lvs. tomentose or pubescent 

 beneath, at least on the veins. 

 G. Stamens 20; anthers pale 

 yellow: Iva. thick and 

 leathery. 



H. Fr. ripening in Aug. 

 and Sept.: Ivs. broad- 

 ly ovate 1. mollis 



HH. Fr. ripening at the end 

 of Oct.: Ivs. oblong- 

 ovate to oval 2. arkansana 



GO. Stamens 10: Ivs. mem- 

 branous at maturity. 

 H. Anthers yellow. 



i. Fr. crimson, villous, 

 ripening the mid- 

 dle of Aug.: Ivs. 

 dark green and 



smooth above 3. Arnoldiana 



II. Fr. orange-red, lus- 

 trous, puberulous at 

 the base: Ivs. dark 

 yellowish green , 

 scabrate above .... 4. submollis 



HH. Anthers rose-color: Ivs. 



scabrate above. 

 i. Plant a tree: Ivs. with 

 short lobes: corymbs 



many-fld 5. Ellwanger- 



II. Plant a shrub: Ivs. [iana 



rather deeply lobed: 

 corymbs 4~6-fld. . . 6. Robesoniana 

 FF. Lvs. glabrous beneath or 



nearly so. 

 Q. Fr. bloomy until nearly 



fully ripe. 



H. Stamens 20: Ivs. gla- 

 brous: fr. subglobose, 



often 5-angled 7. pruinosa 



HH. Stamens 10: Ivs. sca- 

 brate above, while 

 young: fr. obovoid ... 8. Barryana 

 OQ. Fr. not bloomy. 



H. Stamens 20, anthers 

 pink: Ivs. truncate at 

 the base. 



i. The Ivs. dull above, 

 villous beneath 

 when young: fr. 

 with conspicuous 

 calyx and with red 



flesh 9. coccinioides 



IT. The Ivs. lustrous above, 



quite glabrous: fr. 



with yellow flesh 



and small calyx. . . 10. speciosa 



HH. Stamens 510: Ivs. 



broadly cuneate. 

 i. Anthers pink or rose- 

 purple; stamens 

 usually 10. 

 3. Calyx-lobes coarse- 

 ly glandular- 

 serrate: stones 

 usually 5: Ivs. 

 distinctly lobed. .11. pedicellata 

 33. Calyx-lobes entire 

 or obscurely ser- 

 rate: stones 2-3: 

 Ivs. slightly 



lobed 12. pastorum 



ii. Anthers yellow; sta- 

 mens 5-10: Ivs. 

 orbicular-ovate: fr. 



with 2-3 stones 13. rotundifolia 



EE. Corymbs usually few-fid.: 



petioles sparingly glandular 



throughout: Ivs. cuneate at 



the base: stamens 10. 



F. Calyx-lobes glandular-ciliate: 



corymbs slightly villous: 



anthers yellow 14. intricata 



FF. Calyx-lobes entire or glandu- 

 lar above the middle: 

 corymbs glabrous. 

 a. Anthers purplish: calyx- 

 lobes glandular above the 



middle 15. Buckleyi 



oo. Anthers yellow: calyx- 

 lobes without glands 16. Boyntonii 



DD. The petioles glandless or with a 

 few minute glands: Ivs. cu- 

 neate at the base, ovate to lanceo- 

 late, not or very slightly lobed, 

 lustrous above, glabrous at 

 maturity: stamens 20. 

 E. Fr. subglobose, }/in. across or 

 less, bright scarlet or orange: 

 Ivs. oblong-obovate to ovate ... 17. viridis 

 EE. Fr. ovoid, about %in. across, 

 dull brick-red, bloomy: Ivs:. 

 lanceolate to oblong-obovate . 18. nitida 

 cc. Petioles short; Ivs. cuneate at the 



base, not or very slightly lobed. 

 D. The petioles glandless. 

 E. Corymbs many-fld. 



F. Lvs. dark green and shining 



above. 



o. Stamens 10: under side 

 of Ivs. glabrous or nearly 



