CRAT^GUS 



CRAT^GUS 



881 



H. Anthers rose-color or 



purple. 

 I. Fr. glabrous: corymbs 



glabrous. 



j. Shape of Ivs. cu- 

 neate-obovate to 

 oblanceolate: fr. 

 dull red; stones 



usually 2 19. Crus-galli 



Jj. Shape of Ivs. ob- 

 long to ovate: fr. 

 crimson , lus- 

 trous; stones 8-5.20. Canbyi 

 II. Fr. villous until near- 

 ly fully grown: Ivs. 

 oblong-obovate to 

 br o adly ovate: 

 corymbs slightly 



villous 21. fecunda 



HH. Anthers yellow: Ivs. 

 obovate: fr. dull dark 



crimson 22. Arduennse 



GQ. Stamens 20. 



H. Under side of Ivs. vil- 

 lous: corymbs densely 



pubescent 23. Carrierei 



HH. Under side of Ivs. gla- 

 br ous : corymbs 

 slightly pubescent .... 24. persistens 

 FF. Lvs. dull above: stamens 20. 

 o. Fr. juicy, edible: Ivs. cu- 

 neate-oblong or elliptic- 

 lanceolate, tomentose be- 

 neath 25. mexicana 



QQ. Fr. dry, mealy: Ivs. obo- 

 vate or oval. 



H. Length of Ivs. 24 in., 

 pubescent beneath: fr. 

 ovoid, Y^rl in. long, 



with large dots 26. punctate 



HH. Length of Ivs. 1Y?~ 

 2 in., at maturity 

 hairy only on the mid- 

 rib beneath: fr. glo- 

 bose, y^-Y^in. across, 



with small dots 27. collina 



BE. Corymbs few-fld.: Ivs. ^4-2 in. 

 long, pubescent beneath: 

 stamens 20-25. 



F. Fls. with or before the Ivs.: fr. 

 ripening in May, juicy, 

 bright red: Ivs. l%-2 in. 



long 28. aestivalis 



FF. Fls. after the Ivs.: fr. ripen- 

 ing very late, dry, dull red 

 or yellow: Ivs. less than 

 1% in. long. 



Q. Lvs. obovate, mostly ob- 

 tuse, crenately serrate: 



fls. usually solitary 29. uni flora 



QQ. Lvs. oval or ovate, acute, 

 serrate and often lobed: 



fls. 2-6 30. Vailise 



DD. The petioles, margin of Ivs. and 

 corymbs densely glandular: 

 corymbs 8-7-fld. 

 E. Stamens 20, anthers purple: fr. 



ovoid 31. flava 



EE. Stamens 10. 



F. Fr. pyriform: anthers pur- [lobata 



plish 31. flava var. 



FF. Fr. globose: anthers yellow. .32. aprica 

 BB. Stones with furrows or irregular 

 cavities on the inner surfaces; fr. 

 lustrous, soft at maturity. 

 c. Lvs. not or only slightly lobed. 



D. Color offr. scarlet or orange; stones 



2-3: Ivs. with impressed veins. 



E. Fr. small, ovoid or pear-shaped, 



upright, orange-red: Ivs. thin, 



dull above, pubescent below . . .33. tomentosa 



EE. Fr. subglobose, larger, nodding, 



scarlet: Ivs. subcoriaceous, 



pubescent only on the veins 



beneath. 



F. Anthers rose-color; stamens 



usually 20 34. succulenta 



FF. Anthers yellow; stamens 10. 

 G. Foliage glabrous below: 

 stones deeply grooved on 



the inner surface 35. macracantha 



GG. Foliage usually pubescent 

 on the veins below while 

 young: stones slightly 



grooved 36. prunif olia 



DD. Color of fr. black; nutlets 5: Ivs. 

 broadly elliptic to obovate, gla- 

 brous (see also No. 42 with 



blue frs.) 37. Douglasii 



cc. Lvs. more or less distinctly lobed. 

 D. Length of Ivs. more than 2 in.: Ivs. 

 pubescent: fr. nearly Y^in. 



across 38. sanguinea 



DD. Length of Ivs. less than 2 in.: Ivs. 

 quite glabrous: fr. %in. or less 



across 39. dahurica 



AA. Veins of the Ivs. extending to the points 

 of the lobes and to the sinuses; Ivs. 

 usually distinctly lobed. 

 B. Fr. very small, Y^in. long or less, red: 



calyx deciduous. 



C. Lvs. triangular-ovate, with shallow 

 and broad lobes, often 3-lobed: fr. 

 subglobose, lustrous; nutlets 8-5.. AO. Phanopyrum 

 cc. Lvs. ovate, deeply 57-lobed: fr. 



ovoid; nutlets 1-3 41. apiifolia 



BB. Fr. larger: calyx-teeth persistent. 

 C. Color of fr. black or blue. 



D. The fr. blue, bloomy: Ivs. obovate 

 to obovate-oblong , crenate-ser- 



rate, usually not lobed 42. brachya- 



DD. The fr. black; stones with cavities [cantha 



on the inner surfaces. 

 E. Lvs. with about 5 pairs of lobes: 



fr. lustrous, subglobose, juicy A3. nigra 

 BE. Lvs. with 2-3 pairs of lobes: fr. 

 ovoid, dull black or purplish 



black 44. pentagy na 



CO. Color of fr. red or yellow. 



D. Stones with cavities on the inner 



surfaces, 1-2. 



E. Styles 2: Ivs. 3-5-lobed with 

 short and broad serrulate 



lobes 45. Oxyacantha 



EE. Style 1: Ivs. deeply 3-7-lobed, 

 with acute, entire or spa- 

 ringly toothed lobes 46. monogyna 



DD. Stones plain on the inner sur- 

 faces, 2-5. 



E. Branchlets and Ivs. pubescent. 

 F. Lvs. with glandular toothed 



lobes, pubescent 47. tanacetif olia 



FF. Lvs. not glandular-toothed, 



lobes often nearly entire. 

 O. Upper surface of Ivs. dull, 

 pubescent, under sur- 

 face villous 48. orientalis 



QQ. Upper surface of Ivs. gla- 

 brescent, lustrous, under 

 surf ace finely pubescent AQ. Azarolus 

 EE. Branchlets glabrous: Ivs. deeply 



lobed, glabrous 50. pinnatifida 



1. MOLLES. 



1. mollis, Scheele (C. tiliifblia, Koch. C. acerifdlia, 

 Hort. C. coccinea var. mdllis, Torr. & Gray). Tree, to 

 30 ft., with short, stout thorns: Ivs. broadly ovate, 

 sharply and doubly serrate and with 4-5 pairs of short 

 acute lobes, densely pubescent beneath, 3-4 in. long: 

 corymbs densely villous-pubescent; fls. with red disk: 

 fr. about J^in. across, usually pear-shaped, scarlet, 

 more or less pubescent, with thick mealy flesh and 

 4-5 stones. April, May: fr. end of Aug., Sept. Ohio 

 to S. Dak. and Kans. S.S. 13:659. Em. 494 (as C. 

 tomentosa). G.F. 5:221. One of the most decorative 

 species, with large, bright green foliage and showy fls. 

 and frs., ripening in Sept., but dropping soon after 

 maturity. 



2. arkansana, Sarg. Tree, to 20 ft.: branches wide- 

 spreading, forming an irregular open head, unarmed or 



