1920] EEIIDER, NEW SPECIES, VARIETIES AND COMBINATIONS 55 



coccinea macrocarpa hort. apud Zabel, 1, c, ^ — M. cerasifera hiemalis hort. 

 apud Zabcl, 1. c. — M, cerasifera jenensis hort. apud Zabol, 1, c. 188 (1903). — 

 M, cerasifera odorata hort. apud Zabel. I. c. — M, odorata Hort. Gall, ex 

 Zabel, 1. c. (1903), pro synon. 



This hybrid lias been called by many recent authors Malus or Pyrus cera- 

 sifera, but M. cerasifera Spach as well as Pyrus cerasifera Tausch are syn- 

 onyms of M. baccafa var. mandshurica and not applicable to this hybrid. 

 The numerous forms of this hybrid are also often found in gardens referred 

 to M, baccata Borkh. or M, prunifolia Borkh. under various varietal names. 

 Of the different specific names attributed by various authors to this hybrid 

 or quoted as synonyms none seems to be applicable to it. Malus siblrica 

 Borkh. is according to the author's description either a form of M. pumila 

 Mill, or M. astrachanica Dum.-Cours. Pyrus microcarpa Wendl, (not P. 

 microcarpa Spreng.) of which I have not been able to find the place of pub- 

 lication is cited by Roemer (Syn. Monog. iii. 214 (1847)) as a synonym of 

 M. baccafa, while M, microcarpa Carr. is a collective name for all Apples 

 w^ith smaller fruit than those of the common cultivated Apple; it seems to 

 have been first applied to M. microcarpa fastigiata (in Rev. Hort, 1879, 

 215) which is apparently a form of M, pumila. Pyrus rubicunda Hoff- 

 manns. {M, rubicunda Roem.) is probably a form of M. prunifolia or of 

 M, sylvestris, Pyrus cerafocarpa Wender. has been taken for a form of M. 

 prunifolia (J/, prunifolia ^cerafocarpa Roem.) and P. sphaerocarpa Wender. 

 is probably M. baccata var. mandshurica Schneid. to w^hich variety also 

 P. suaveolens Wender. may possibly be referable. 



To this hybrid belong many of the forms cultivated under the name 

 " Siberian Crabs " and the " Red Siberian ^' (colored plate in Beach, Apples 

 of New York, ii. 264, tab.) may serve as a representative of this group. 

 One of the oldest forms is probably '* Biggs' Everlasting Crab " mentioned 

 by Loudon who states that it was raised in the Cambridge Botanic Garden 

 by Mr. Biggs from seed received in 1814 from Siberia. 



X Malus robusta var. persicifolia, var. nov. 



A formis aliis reccdit praecipue foliis oblongo-Ianceolatis, 5-7.5 cm. longis 

 et 1.5-2.5 cm. latis. — Arbor parva ramis suberectis satis robustis, folia 

 acuminata, basi cuneata, argute serrulata, ab initio fere glabra, maturitate 

 subchartacea; petioli 1-1.5 cm. longi: flores albi, in alabastro leviter carneo 

 suffusi, 2.5 cm. diam.; pedicelli 2-2.5 cm. longi, ut calyx glabri: fructus 

 subglobosus, circiter 1.5 cm. diam., plerique calycc deciduo intcrdum parvo 

 persistente coronati, flavi, colore rubro suffusi. 



Cultivated at the Arnold Arboretum; received from the Veitchian Nurseries in 

 1913 as Pyrus sp. Punlom (No. 179); type specimens collected May 8 and August 

 26, 1918, preserved in the herbarium of the Arboretum, 



This is a very distinct looking Apple with rather stout branches fairly 

 closely set with narrow peach-like leaves; but presenting no striking orna- 

 mental qualities. 



X Malus adstringens Zabel = M. baccata X dasyphylla Zabel in Beiss- 



