1924] REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 241 



This variety was introduced by R. Farrer in 1914 from near Kwanting 

 in the Nan-ho valley, Kansu. 



Viburnum acerifolium L. f . ovatum, f . nov. 



A typo recedit foliis manifeste ovatis indivisis margine tantum repando- 

 dentatis, eis in apice ramulorum sterilium saepe integris vel fere integris 

 et ovatis vel oblongo-ovatis. — Folia 6-12 cm. longa et 3.5-8.5 cm. lata, 

 acuminata, basi cordata vel subcordata, subtus moiliter pubescentia; 

 petioli 1-2 cm. longi; ceterum ut in typo. 



New York: Cobs Hill near Rochester, H. B. Slavin, no. 4, June 10 and 

 August 23, 1920 (type). 



Massachusetts: steep rocky wooded slope, North Adams, Berkshire 

 Co., M. L. Fernald & Bayard Long, no. 10461, June 23, 1913. 



Indiana: in a White Oak wood 2 miles east of Grayford, Jennings Co., 

 C. C. Beam, no. 38593, May 30, 1923. 



This form with its undivided ovate leaves looks quite distinct from the 

 typical 3-lobed form and bears some resemblance to V. affine var. hypo- 

 malacum Blake but is easily distinguished by its longer-petioled, larger 

 leaves, the smaller flowers and the differently shaped fruit. The specimen 

 from Massachusetts has smaller leaves than the type, not exceeding 7 cm., 

 and that from Indiana has the leaves more strongly toothed with broad 

 triangular teeth. 



Plants of this form received from Rochester in the autumn of 1920 are 

 growing in this Arboretum. 



Dipelta floribunda Maxim, var. parviflora, var. nov. 



Dipelta yunnanensis F. N. Meyer in U. S. Dept. Agric. Bur. PI. Indust. Invent. 

 Seeds PL Imp. xlii. 36, 54, nos. 39905, 40027 (1918).— Non Franchet. 



A typo recedit foliis minoribus late ellipticis vel elliptico-lanceolatis 

 3.5-6 cm. longis subtus ad costam venasque sparsius breviusque pilosis, 

 petiolus ramulisque glabrescentibus vel breviter puberulis, pedunculis ut 

 videtur saepissime unifloris, pedicellis sparsius pubescentibus, sepalis 

 subulatis 3-4 mm. longis, corolla circiter 2 cm. longa et sensim in tubum 

 angustata, ovario apicem versus tantum hirsuto. 



Specimens examined: Arnold Arboretum, A. Rehder, June 12, 1924 

 (raised from cuttings sent by F. N. Meyer from Paoji, Kansu, to the U. S. 

 Department of Agriculture in 1914 and distributed under no. 40027). 



This variety differs from the typical form only in the smaller size and 

 slighter pubescence of all its parts. It is not as ornamental as the type 

 which has up to six flowers on a peduncle with the corolla varying between 

 2.5 and 3 cm. in length. As far as I know the species has not yet been 

 recorded from Kansu. 



Diervilla Middendorffiana Carr. f. bicolor, comb. nov. 



Calyptro stigma Middendorffiana var. bicolor Regel in Gartenfl. vi. 4, t. 183 

 (upper two flowers) (1857). 



Specimens examined: Bot. Gard., Forst-Akad. Muenden, H. Zabel y 

 Aug. 5, 1873 (as no. 18; received from Haage & Schmidt, Erfurt, in 1872). 



