y 



236 



the group Tenuifoliae. This group has not been known before 

 west of the Mississippi River ; but this discovery is only in Hne 

 with facts recently ascertained in regard to the high altitudes of 

 New Mexico, namely, that many of the plants of our northeastern 

 flora, or closely allied species, occur there at altitudes above 

 2,400 meters. For this information I am indebted to Professor 

 V. M. Spaulding, of the Desert Botanical Laboratory. 



This species of the Tenuifoliae can be characterized as follows : 



Crataegus Wootoniana sp. nov. 



Leaves ovate, 2—4.5 cm. long, 1.5-4.5 cm. wide, acute at the 

 apex, broadly cuneate or truncate at the base, serrate or doubly 

 serrate with fine straight teeth and 3-4 pairs of broad acute 

 straight lobes, membranaceous, glabrous, dull light-green above, 

 paler below ; petioles slender, 1-2 cm. long : corymbs many- 

 flowered, glabrous ; flowers about i cm. wide ; calyx glabrous, 

 calyx-lobes lanceolate -acuminate, entire, about 4 mm. long, pink, 

 persistent, erect or spreading in fruit ; stamens about 10 ; styles 

 3-4: fruit ellipsoidal, red, 6-10 mm. thick, 8-12 mm. long; 

 nutlets usually 3, strongly ridged on the back, 5-7 mm. long ; 

 nest of nutlets 5-6 mm. thick. A shrub sometimes 3 meters 

 high, armed with curved spines 2—4.5 cm. long, vegetative twigs 

 glabrous, reddish -brown becoming ash-gray. 



Specimens examined : 56*./, 0. B. Metcalfe, Mogollon Mts., on 

 or near the west fork of the Gila River, Socorro Co., New Mex- 

 ico ; "Head of Little creek. Scarce. A shrub 10 ft. high, 

 Aug. 23, 1903, 8,000 ft. ; " type in the Gray Herbarium, cotypes 

 (used in the description), sheets of the same number in the her- 

 baria of the New York Botanical Garden, U. S. National Mu- 

 seum, and of the New Mexico Agricultural College ; type of 

 flowers, 182, Turner, White Mts., Lincoln Co., New Mexico, 

 North Eagle, i 5^ miles above forks. May 22, 1899, 8,000 ft. 

 New York Bot.a.nicai, G.a.rden. 



REVIEWS 



Punnett's Mcndelism* 



The first edition of this essay was printed in May, 1905, and 

 the second revised edition in February, 1907. The outline of 



*Punnett, R. C. Mendelism. Second Edition. Pp. viii -(- 85, /. 7. Cam- 

 bridge: Macmillan and Bowes ; London: Macmillan and Co. , Ltd. 1907. 



