A STUDY IN PLANT VARIATION 



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Flower 



Fruit 



rounded and biglandular at the base with two dark brown 

 stalked glands; pubescent only along the midrib on the 

 upper and on the lower surfaces, blade glabrous; stipules 

 lobed, glandular-serrate, and early deciduous. At maturi- 

 ty thick and firm, dark green above, paler below. 

 Appearing May 1 to 15, before the leaves, 10 to 15 mm. 

 broad on pubescent pedicels 15 mm. long, usually in 3 or 4 

 flowered umbels, sepals ovate, rounded at the apex, green, 

 pubescent, calyx tube campanulate 2 mm. deep, glandular 

 on the inner surface, pubescent on the outer; petals white, 

 ovate, rounded at the apex, contracted at the base into 

 short claws; stamens 30, from 5 to 10 mm. long, glabrous, 

 inserted on the calyx tube; style 10 mm. long, glabrous, 

 with truncate stigma; carpels s mple, ellipsoid, glabrous. 

 Ripening August 25 to September 15, of a dark red color, 

 spherical or slightly flattened at the blossom end, 14 x 13 

 mm. covered with a light waxen bloom, flecked with, 

 numerous light colored spots; weight 1.50 to 1.90 grams, 

 flesh of a watery reddish yellow color; pulp free from the 

 stone, sweet, tannin layer under the skin; stone oval, 

 compressed, reddish in color, 9.0 mm. long and 8.5 x 5.8 

 mm. thick, weight .25 to .30 grams, acutely ridged 

 on the ventral, slightly grooved on the dorsal suture. 



Form 



Bark 



Lenticels 



8. Primus maritima var. lutea magna 

 (Large Yellow) 



A low spreading bush 3 to 6 feet high forming dense thicket- 

 like patches; branching irregular and elongate, giving the 

 bush a rather straggling appearance as to its habit of 

 growth. 



Old stem rather stout, rough, cracked into thin dark gray 

 plates which tend to persist, mostly lichen covered. Young 

 branches smooth, dark purplish brown, with numerous 

 light gray lenticels. Youngest twigs smooth, numerous, 

 elongate, slender, puberulous, epidermis very gray, 

 persistent, when shed uncovers a light reddish brown bark. 

 Numerous, small, conspicuous, irregularly distributed over 

 the branches, rounded and more elevated on the youngest 

 twigs, darker and more flattened on the younger branches. 



