NOBTREJRN DEWBERRY 329 



Var. RORIBACCUS, Bailey. 

 "Plants larger and stronger; leaflets broad below, usually tri- 

 angular-ovate, doubly serrate with small teeth, and more or 

 less notched or jagged; peduncles longer, straighter, stouter, 

 and more erect, habitually more numerous and more conspic- 

 uously overtopping the leaves; flowers very large, sometimes two 

 inches (5 em.) across ; sepals uniformly larger, some of them 

 much prolonged and leaf-like and conspicuously lobed (some- 

 times becoming an inch long and wide) ; fruit much larger and 

 longer as a rule." — Original description. 



This variety is represented in cultivation by the Lucretia. It 

 was found in West Virginia, though evidently not common there. 



Var. MiCHiGANENSis, Card. 



Stems woody, trailing in sand and more or less subterranean, 

 sparingly armed with comparatively weak, reflexed or recurved 

 prickles, which become stronger on the petioles of the present 

 year's growth; upright shoots or peduncles nearly herbaceous, 

 more pubescent, with but few slender prickles and with a greater 

 diameter than in the species; stipules long, prominent, often 1 

 inch (25 mm.) long on young wood, with a distinct midrib; leaflets 

 of flowering shoots 3, mostly ascending, giving the shoots a leafy 

 appearance; leaflets of new wood pedately 5-7, larger than in the 

 species, more deeply and irregularly incised, somewhat pubescent 

 above and beneath; pedicels numerous, pubescent, but not glan- 

 dular, upper one short, scarcely exceeding the leaves; flowers 

 small, sepals densely tomentose within, reflexed, with a slightlj' 

 expanded acumination; petals small, obovate, about as long as the 

 sepals; fruit large and good. 



Collected by L. H. Bailey, near South Haven, Michigan. 



This resembles var. roribaccus, but appears to be more strictly 

 trailing, less woody, more pubescent, leaflets more incised and 

 not so broad at base, pedicels not so long and straight, prickles 

 fewer and more slender, stipules longer and flowers much smaller. 



28. R. iNVisus, Bailey. — B. Canadensis var. invisus, Bailey. 



Stems stout and stiff, often partially ascending, sparingly 

 armed with reflexed straight prickles; leaflets much larger than 

 in the species, broad and thin, glabrate above and beneath, the 

 teeth usually very large, often rounded and terminating in a 

 minute point; peduncles or flower stems long and straight, 

 glandular in the wild type; young flower buds commonly bear- 

 ing a prominent tip formed by the connivent ends ot the sepals, 

 which often become foliaceous later; flowers generally larger 

 than in the species and overtopping the leaves; fruit globular- 

 oblong, of good size. 



