190 Rhodora [SEPTEMBER 
florescence, pedicels and follicles, although ordinarily well marked, 
show such transitions as to indicate that S. rosea is an extreme variety 
of S. tomentosa rather than a distinct species. It should be called 
SPIRAEA TOMENTOSA L., var. rosea (Raf.) n. comb. S. tomentosa 
L. Sp. Pl. 489 (1753) as to the Plukenet plate. S. rosea Raf. N. Fi. 
iii. 62 (1836).— The following specimens are characteristic. WEsT 
VinaGiNIA: Elkins, Randolph Co., Greenman, no. 188. Nortu CARO- 
LINA: Biltmore, Biltmore Herb. no. 1247b.  SovrH CAROLINA: 
definite station not given, M. A. Curtiss. Wisconsin: Milwaukee, 
Lapham, Polk Co., C. F. Baker; Camp Douglas, E. A. Mearns, no. 
336. Murnnesota: St. Paul, Hale; Chicayo Co., B. C. Taylor. 
Gray HERBARIUM. 
SISYMBRIUM OFFICINALE IN THREE STATES. 
SipxEY F. BLAKE. 
My first meeting with the typical form of Sisymbrium officinale (L.) 
Scopoli was on 13 July, 1910, when I collected three plants (sheet 
1295, my herb.) along arailroad at St. Paul, Minnesota. Not 
recognizing its identity at the time, I failed to note whether other 
individuals of the species were present. So far as I am aware, the 
typical form has not been reported from the state since the difference 
between our two forms was first pointed out by Dr. Robinson some 
years ago. 
Since that time I have twice collected the plant in Stoughton, 
Massachusetts. On 4 July, 1911, a single plant, growing with many 
of var. leiocarpum DC., was collected on a dump (sheet 2823). On 
13 July, 1912, just two years after my first meeting with the species, 
four specimens were taken, found, together with many glabrous- 
fruited ones, in dry soil in a house-yard, perhaps a mile from the dump 
at which it had previously been taken. 
On 27 July, 1911, Mrs. N. F. Flynn showed me at Starr Farm, 
Burlington, Vermont, a colony of Hedge Mustard in which she had 
noticed three days before a plant or two with pubescent pods. Going 
over the colony more carefully, we counted some forty-eight plants of 
