1910] 'l'idestrom,— Notes on Peltandra, Rafinesque 47 
(c) Heads scattered and peduncled: involucre copiously arach- 
noid. — Typical specimens. Marne: Fort Fairfield, August 9, 1909 
(Fernald & Wiegand); Dover, September 1, 1894 and August 28, 
1896 (Fernald); North Berwick, September 5, 1894 (J. C. Parlin). 
MassACHUSETTS, Stockbridge, August 23, 1902 (R. Hoffmann). 
4. A. MINUS (Hill) Bernh. Syst. Verz. Erfurt. 154 (1800). Lappa 
minor Hill, Veg. Syst. iv. 28 (1762). A. Lappa, var. minus Gray, Syn. 
Fl. i. pt. 2, 397 (1878). Typical specimens. Marne: Houlton, Au- 
gust 12, 1909 (Fernald & Wiegand); Rumford, 1887 (J. C. Parlin); 
Hanover, September 10, 1889 (J. C. Parlin); East Auburn, August 
27, 1896 (E. D. Merrill, no. 556); North Berwick, August 31, 1894 
(J.C. Parlin). New Hampsuire: Walpole, August 4, 1900 (Fernald, 
no. 377); VeRMonT: Manchester, July 12, 1898 (M. A. Day, no. 104). 
MassaAcHUSETTS: Malden, August 8, 1886 (F. S. Collins); Cambridge, 
August 30, 1908 (C. A. Weatherby, no. 2); Oak Island, Revere, August 
20, 1882 (H. A. Young); Boston, August 17, 1866 (Wm. Boott); Blue 
Hills, September 1, 1895 (W. H. Manning). Ontario: Ottawa, Au- 
gust 4, 1894 (J. Macoun). 
NOTES ON PELTANDRA, RAFINESQUE. 
Ivan TrpESTROM. 
(Plate 83.) 
During the season of 1904, while searching for aquatic and marsh 
plants at Cameron Run, near Alexandria, Virginia, I noticed a number 
of Peltandrae in the marsh adjoining the creek. "There appeared to be 
two distinet forms and I naturally supposed the second form to be 
P. sagittifolia, but upon examination the dark green seed disproved 
my supposition. The difference between the two forms was very 
marked: the one was robust having ample leaves and a rather large 
head of fruit, while the other was slender, its leaves narrow-oblong 
and its head of fruit much smaller. It is true that the leaf-form in 
many if not in all of our Araceae, is very variable, and that even on a 
single plant we may find leaf-outlines ranging between the maximum 
and the minimum for that species; yet in the case of our Peltandrae 
there are characters upon which we may possibly recognize two or 
three long since forgotten forms. 
