19*5] PALMER, SYNOPSIS OF NORTH AMERICAN CRATAEGI 59 



Crataegus 



promissa Sargent in N. Y. State Mus. Bull. cxxn. 50 (1908). — Silvi- 



colae. — Ontario, New York, Vermont, Michigan (type locality: 



Niagara Falls, N. Y.). 

 prona Ashe in Jour. Elisha Mitchell Sci. Soc. xix. 17 (1903). — Silvi- 



colae. — Michigan, Ohio (type locality: Port Huron, Mich.), 

 propensa Sargent in Proc. Acad. Nat. Sci. Phila. lxii. 214 (1910). 



Tenuifoliae. — Pennsylvania (type locality: Key ser Valley , Scranton) . 

 propinqua Ashe in Jour Elisha Mitchell Sci. Soc. xx. 53 (1904). 



Tenuifoliae, — Ohio (type locality: Milan), 

 propixa Sargent in Proc. Acad. Nat. Sci. Phila. lxii. 248 (1910). — 



Macracanthae. — Pennsylvania (type locality: Scranton). 

 propria Sargent in Rhodora, vn. 214 (1905). — Rotundifoliae. — Massa- 

 chusetts (type locality: South Lancaster), 

 pruinosa (Wendl.) K. Koch, Hort. Dendr. 168 (1853). — Pruinosae. — 



Ontario, New England and New York, south to Delaware, west to 



New York, Ohio, Indiana and northern Illinois (type locality of 



Mespilus pruinosa Wendland not given). 

 pruinosa var. conjuncta (Sarg.) Eggleston in Rhodora, x. 81 (1908) = 



C. conjuncta. 

 pruinosa f. dissona (Sarg.) Eggleston in Rhodora, x. 81 (1908) =C. dissona. 

 pruinosa var. latisepala (Ashe) Eggleston in Rhodora, x. 81 (1908) = 



C. latisepala. 

 pruinosa var. philadelphica (Sarg.) Eggleston in Rhodora, x. 81 (1908) = 



C. philadelphica. 

 pruinosa var. Porteri (Britton) Eggleston in Rhodora, x. 81 (1908) = 



C. Porteri. 

 pruinosa X punctata Eggleston in N. Y. State Mus. Bull, ccxliii-iv. 



64 (1923). (?) 

 pruinosa X straminea Eggleston in N. Y. State Mus. Bull, ccliv. 422 



(1924). (?) 

 prunellifolia Bosc in DeCandolle, Prodr. n. 627 (1825) = C. prunifolia 



Pers. ? 

 prunifolia (Marsh.) Persoon, Syn. n. 37 (1807). — Macracanthae? — 



Known only in cultivation. 



prunifolia var. ingestria (Lodd.) Loudon, Arb. Brit. II. 821 (1838) = C. 

 prunifolia Pers. (?) 



puberis Sargent in N. Y. State Mus. Bull. cxxn. 73 (1908). — Rotundi- 

 foliae. — New York (type locality: Belfast). 



pubescens (H.B.K.) Steudel, Nomencl. Bot. ed. 2, 433 (1841). — Mexico 



(type locality: Real de Moran, Hidalgo). 



pubescens var. Botterii Eggleston in Bull. Torrey Bot. Club, xxxvi. 



506 (1909).— Mexico (type locality: Orizaba). (?) 



pubescens f. Humboldtii Stapf in Kew Bull. Misc. Inform. 1914, 8, 293 



(1914). — Mexico (type region : San Luis Potosi to Federal Dist.). (?) 



