132 BOTANICAL GAZETTE {avcusr 
ical Club Check List, however, P. Torreyi Benth. is reduced tof 
verticillata. Thus within three years this plant, which was quite. 
obscure to the great monographer of the Labiate, under the inspi- 
ing influence of a resuscitated generic name was combined with # 
least two other species: Otto Kuntze, following Dr. Gray, considett 
the plant a form of Pycnanthemum muticum ; then it was treated 1 
species distinct from both P. muficum and P. Torreyi; then dui 
the same year it was united with P. Zorreyz. ; 
As stated above, a study of the type of Brachystemum verticillates: 
Michx. shows that plant to be fairly distinct from either his 3. 
cum or the later Pycnanthemum Torreyi Benth. The follows 
description and notes may help to distinguish this plant, and show tt 
points of similarity and of difference between it and those with whict 
it has been associated. 
y and rathet | 
PYCNANTHEMUM VERTICILLATUM Pers.—Stem_ shortl 
corymbos: 
closely pubescent especially above, the branches loosely sub : 
* leaves ovate-lanceolate or lanceolate, entire or slightly toothed, 
sessile, mostly glabrous; the reduced upper ones subtending . 
rather. dense terminal or verticillastrate glomerules, densely shat 
pubescent : bracts of the glomerules ovate-lanceolate with subulate" 
more or less pubescent on the backs, and with ciliate margins: oe 
5.5"" long, with the 5 hispid lance-subulate teeth about equal : 
7 or 8"" long, the upper lip short-oblong or obovate, the lower 
the oblong middle lobe twice exceeding the lateral ones: * 
included, scarcely 1™™ long. —Syn. 2: 128 ; Benth. in 
190 ; Gray, Am. Jour. Sc. 42: 47. P. danceolatum Benth. Lab. 
part, not Pursh. /P. muticum Gray, Syn. Fl. 2: 355) in part, 
Brachystemum verticillatum Michx. Fl. 2:6. pe 31: 
cillata Kuntze, Rev. Gen. 2:520 (as to synonym only); i di 
Vail, Mem. Torr. Bot. Cl. 4: 146 (at least as to Farmer Mie 
but not as to note, which apparently refers to Pycnanthemum | 
toides Gray); Britton, Mem. Torr. Bot. Cl. 5: 28° (exclnt 
Pycnanthemum Torreyi Benth.).—Specimens examined : a 
(Michaux); Colchester, Vermont (Rodédins) ; Rutland, Roy! 
Clarendon Springs, Vermont (W. W. Eggleston); Be | 
setts (C. W. Jenks and C. W. Swan); Dedham, Mase 
Alice Browne) ; Providence, Rhode Island (George There 
* Mem. Torr. Bot. Cl. 5: 280. 
