r 



AMEEICAX POTATOES : CLASSIFICATION AND DESCEIPTIONS. 7 



The varieties in this group which have been studied are the Early 

 Albino, Early Michigan (PI. V), and Early Puritan. 



Further investigation will doubtless result in the inclusion of a 

 number of other varieties. 



4.— ROSE GROUP. 



In point of numbers the Rose group is one of the largest, if not 

 the largest, group imder this classification. With the exception of 

 the Extra-Early White Rose, all of the varieties in this group have 

 pink-skinned tubers, and all save the Late Rose may be classed as 

 early-maturing varieties. 



In order to accommodate certain varieties which apparently belong 

 to this group, but which differ either in shape of tubers, color of 

 sprouts, or flowers, it has been found necessary to make three sec- 

 tions, in the first of which are included the true Early Rose types. 

 Tlie vine description of the Early Rose in section 1 will serve reason- 

 ably weU for all. Plates VI, VII, and VIII illustrate the different 

 varieties belongmg, respectively, to sections 1, 2, and 3. 



Description. — Section 1: Vines of medium height, with stout, rather erect, dark- 

 green stems and medium to large leaves. Flowers rather abundant, white. Tubers 

 elongated or oblong, usually flattish at the center and tapering gradually toward 

 each end; stem and seed end rather blunt. In the North, tubers tend to become 

 shorter, thicker, and more nearly round. (PI. VI, figs. 1 and 2.) Eyes numerous, 

 shallow to medium in depth, but sharply marked; sometimes protuberant. Skin 

 smooth and, except in the Extra-Early White Rose, of a rather deeper shade of flesh 

 color or pink than the Early Ohio. Flesh creamy white, sometimes streaked with red. 

 Sprouts rather long, medium thick, the base not much enlarged (PI. IX, fig. 1) and 

 usually clearly tinted with rose-lilac ; leaf scales and tips creamy white or tinged with 

 rose-lilac. 



The following varieties are thought to belong to section 1: 



Extra-Early Fillbasket. 

 Extra-Early Vermont. 

 Extra-Early White Rose. 

 Houlton Rose. 

 Late Rose. 

 Northern Beauty. 

 Rochester Rose. 

 Somers' Extra Early. 

 Thorbiirn. 



Clark's No. 1. 

 Early Durham. 

 Early Fortune. 

 Early Maine. 

 Early Norther. 

 Early Ro.se fPl. VI). 

 Karly liowT. 

 Early Thoroughbred. 

 Early Vermont. 

 Early Walters. 



Section 2: Vines largerand more luxuriant than those of section 1. Flowers white. 

 Tubers broad-rounfli.nh to short-oljlong, flattoncid (1*1. VII): Eyes not very numerous 

 and rather shallow. Skin slightly deeper colored than that of the Early Rose. 

 Sproiifij shorter and thicker and usually considciraldy enlarged at the base; color 

 of Hprouts rnaiive; leaf scales and tijis (\('.c\) wvMwt'. or magenta. 



Tlio varieties clasHCHJ iirid(ir sfiction 2 are the Manistee (Early and 

 Impn»v<!(l; and Sj)uiildirig .Vo. 4 (PI. VII). 



Section '.',: N'iricH quite similar to (Iiohc of wction I. I'Ioucih |)iii|)|c (ir rose lihic. 

 Tubf^rn oblong, rather I. road and tliifk, more or Icmh (laltciicd, huyy (\'\. VI 1 1). lOyes 



