1920] REHDER, NEW 



193 



and the basal scales of the terminal buds are acuminate, as characteristic in 

 var. albertiana, while in typical P. glauca the scales are emarginate at the 



apex. 



Picea glauca conica on account of its very characteristic habit and aspect 



promises to become one of the most favorite dwarf Spruces. Like other 

 dwarf conifers it is easily increased by cutting so that it may become a 

 common garden plant. 



Picea mariana Brit., Sterns & Pogg. f. ericoides, forma nova. — P. 

 ericoides Masters in Kew Hand-Hst Conif. 65 (1896), nom, nudum. 



A typo recedit habitu humiliore late pyramidali, ramulis flavo-brunneis, 



saepe 



obscure 



Cultivated at the Arnold Arboretum; received from the Roy. Botanic 

 Gardens, Kew, in 1900. Type specimens collected April 5, 1917, preserved 

 in the herbarium of the Arboretum. 



This form of the Black Spruce forms a pyramidal bush loosely branched, 

 of slow growth with short and slender light reddish or yellowish brown 

 branchlets, the leading shoots glabrescent toward the apex. The leaves 

 are less than one cm. long, of dull bluish green color and finely pointed. 

 Our plant is undoubtedly the one enumerated by Masters as P. ericoides, 

 as it was received from Kew under that name which is fairly descriptive of 

 its appearance. It is of little ornamental value, which accounts for the 

 fact that it has not been mentioned elsewhere nor described in horticultural 

 literature. 



LILIACEAE 



Yucca flaccida Haworth var. major, comb. nov. — Y. glaucescens Ha- 

 worth, SuppL PI. Slice. 34 (1819). — Sweet, Brit. Flow, Gard. I. t. 53 

 (1824). — F. orchioides var. major Baker in Bot. Mag. cm. t. 6316 (1887). 

 — F. jilamcntosa var. F. glaucescens Baker in Jour. Linn. Soc xviii. 

 228 (1880). — Y. fdamentosa var. F. anhcerpcnsis hort. apud Baker, 1. c. 

 (1880), — Yucca flaccida glaucescens (Haworth) Trelease in Missouri 

 Bot. Gard. Rep. xm. 51, t. 12, fig. 2, t. 13-15, t. 17, fig. 1, t. 76, fig. 2, t. 79, 



fig, 2 (1902). 



This variety differs from the type chiefly in the mostly broader, more 

 glaucous leaves remaining upright a longer time, in its almost tomentose 

 panicle and the attenuate petals. It is much cultivated in American 

 gardens. 



RANUNCULACEAE 



Paeonia suffruticosa var, spontanea, var. nov. — - Paeonia suffruticosa 

 Rehder & Wilson, in Sargent, PI Wilson, i. 319 (1913). 



A typo rcccdit folioHs ovatis vel late ovatis inciso-dentatis vel trifidis, 

 basi rotundatis vel late cuneatis, 3-7 cm. longis, subtus ad nervos praeser- 

 tim basin versus pilosis, floribus 10-12 cm. diam. roseis, petaUs circiter 10, 

 interdum staminibus petaloideis praeditis. 



