64. Crataegus Arnoldiana Sargent. Arnold's Thorn

Fig. 2398

C. Arnoldiana Sarg. Bot. Gaz. 31: 221. 1901.

A tree, sometimes 20° high, with ascending branches forming a broad crown; spines numerous, 2-3' long. Leaves broadly ovate to oval, 1 1/4'-4' long, 1'-3 1/2' wide, acute at the apex, broadly cuneate to truncate at the base, serrate or doubly serrate with broad shallow acuminate lobes, tomentose, becoming scabrous above, subcoriaceous; corymbs many-flowered, tomentose; flowers abort 10" broad; stamens about 10; anthers yellow; styles and nutlets 4 or 5; fruit globose or sub-globose, 8"-10" thick, bright crimson, slightly pubescent; calyx-lobes but slightly swollen, spreading; flesh thick, juicy and edible.

Eastern Massachusetts and Connecticut. May; fruit ripe August.

64 Crataegus Arnoldiana Sargent Arnold s Thorn 74064 Crataegus Arnoldiana Sargent Arnold s Thorn 741

65. Crataegus Canadensis Sargent. Canadian Thorn

Fig. 2399

Crataegus canadensis Sarg. Rhodora 3: 73. 1901.

A round-topped tree, sometimes 300 high, with spreading branches, and numerous thorns l'-2 1/2' long. Leaves ovate, 1 1/4'-3', long, 1-2 3/4" wide, acute at the apex, broadly cuneate to truncate at the base, serrate or doubly serrate with acute lobes toward the apex, tomentose, becoming scabrate above, subcoriaceous; corymbs many-flowered, tomentose; flowers about 10" broad; stamens about 20; anthers yellow; styles and nutlets 4 or 5; fruit short-ellipsoid to sub-globose, crimson, 5"-8" thick, slightly tomentose, calyx-tube rather prominent, the lobes spreading; flesh thick, edible.

About Montreal, Quebec. May; fruit ripe September.

66. Crataegus Submˇllis Sargent. Emerson's Thorn

Fig. 2400

C. tomentosa Emerson, Trees & Shrubs Mass. 430. 1846.

Not L. C. submollis Sarg. Bot. Gaz. 31: 7. 1901.

A tree, sometimes 25o high, with spreading branches forming a broad symmetrical crown, the spines numerous, 1-3' long. Leaves ovate, 1 1/2' - 4 1/4' long, 1 1/4'-3 1/2' wide, acute at the apex, broadly cuneate at base, serrate or doubly serrate and acutely lobed, membranous, yellow-green, tomentose, becoming scabrate; corymbs many-flowered, tomentose; flowers about 12" broad; stamens about 10; anthers light yellow; styles and nutlets 4 or 5; fruit short-ellipsoid to pyriform, orange-red, 8"-10" thick, slightly tomentose, calyx-lobes persistent; flesh thick, edible.

Quebec to southern Ontario, Massachusetts and New York. May; fruit ripe September.

66 Crataegus Subm Llis Sargent Emerson s Thorn 742

67. Crataegus Mollis (T. & G.) Scheele. Red-Fruited Or Downy Thorn

Fig. 2401

?C acerifolia Lodd.; Moench, Hort. Weiss. 28. 1785.

C. coccinea var. (?) mollis T. & G. Fl. N. Am. 1: 465. 1840.

C. mollis Scheele, Linnaea 21: 569. 1848. C. tiliaefolia K. Koch, Weissd. 247. 1853.

A tree, sometimes 400 high, with spreading branches forming a broad-topped crown. Spines 1'-2' long; leaves broadly ovate, acute at the apex, cordate to truncate at the base, 1 1/2'-5' long, 1 1/2'-4' wide, serrate or twice serrate with narrow acute lobes, slightly rugose, membranous, densely tomentose beneath, tomentose above, becoming scabrate; corymbs tomentose; flowers about 12" broad; stamens about 20; anthers light yellow; styles and nutlets 4 or 5; fruit short-ellipsoid to subglobose, scarlet, 7"-12" thick, calyx-lobes deciduous; flesh thick, edible.

Southern Ontario to South Dakota, Central Tennessee and Arkansas. May; fruit ripe September. Downy haw.

67 Crataegus Mollis T G Scheele Red Fruited Or Dow 743