G. H. SnuLL 87 



nieasuiements are in centimeters and were made with a micrometer- 

 caliper by my scientific assistant, W. F. Friedman, to whose faithful 

 work and painstaking care it is a pleasure to give this grateful 

 recognition. 



Plants of the (6) gi-oup were distinguishable by their closer rosettes, 

 caused by the relatively short, ascending petioles and nearly horizontal 

 blades. They were recognized at once as nanella-like rosettes, though 

 their longer, narrower, less crinkled leaves distinguished them strikingly 

 from the nanella-iorm derived from 0. Lamarckiana. The adult plants 

 proved to be of little more than nanella-stature (25 — 40 cm.) as shown 

 in fig. 1, but of very unique aspect, due to the broad-lanceolate, 

 acuminate, dark gi-een, nearly uncrinkled leaves. The buds were l<jng, 

 slender and the cones nearly terete. Gates (1914) reports the occuiTcnce 

 of dwarfs in his cultures of both 0. rubricalyx and 0. graiHliflora, and 

 their recurrence in some of the F^ families from crosses between these 

 two species. 



The gi'oup (c) differed from the (fZ) gi-oup in having conspicuous red 

 spots on the dorsal surface of the leaf-blades, as shown in the accom- 

 panying Plates. As Gates had found self-fertilized rubricalyx yielding 

 progenies containing both rubricalyx and rubrinervis, I at once infei'red 

 that I was getting the same result, and that the spotted rosettes belonged 

 to the rubricalyx- and the unspotted rosettes to the rubri^iervis-type. 

 This did not prove to be true, however, as the entire (a) group, both 

 spotted and unspotted, had the intensely pigmented hypanthia and bud- 

 cones characteristic of 0. rubricalyx. In the adult stage the spotted and 

 unspotted gi-oups, (c) and (d), were definitely differentiated from one 

 another in only one feature, namely, in the pigmentation of the stems. 

 The group grown from spotted rosettes, {ac), had intensely red-pigmented 

 stems, the pigment being particularly conspicuous about the base of the 



' Greatest diameter. 



- Least diameter. 



'■' Greatest diameter parallel with sides. 



