Rbodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 12. January, 1910. No. 133. 
NOTE ON THE FORMS OF KALMIA LATIFOLIA. 
ALFRED REHDER. 
THE discovery of a new locality for the peculiar form of Kalmia 
latifolia with the corolla divided into five narrow petals recorded by 
Professor G. E. Stone in the October number of RHopora (p. 199) is 
very interesting and shows that forms exhibiting exactly the same 
character of variation may originate independently at different localities 
and at different times. Besides this form several other distinct forms 
of the same species are known and have been introduced into cultiva- 
tion, incidentally receiving varietal names published mostly in Euro- 
pean dendrological and horticultural publications. As these names 
have apparently not yet been recorded in the botanical literature of this 
country and all the forms were probably originally found wild and may 
be found again, it will certainly be of interest to the student of our 
flora to give here an enumeration of these forms. 
VARIATION IN THE SHAPE OF THE COROLLA. 
KALMIA LATIFOLIA f. polypetala (Nicholson) — K. latifolia var. 
polypetala [Nicholson], Hand-list Arb. Kew II. 49. 1896 — Rehder, 
Möllers Deutsch. Girtn.-Zeit. XVIII. 578. 1903.— K. latifolia 
monstruosa Mouillefert, Traité Arb. Arbriss. II. 1027. 1897 — K. 
latifolia var. monstruosa Rehder in Bailey, Cycl. Am. Hort. II. 854. 
1900. ‘This form, as mentioned by Professor Stone, was first found by 
Miss M. Bryant near South Deerfield, Mass., in 1870 and described by 
Asa Gray in 1871 (Am. Nat. IV. 373) as a form showing dialysis with 
staminody, later an illustration was published by Professor C. S. 
Sargent in Garden & Forest IIT. 452, fig. 50, 1890. In the plants now 
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