1917] 
GATES—THE GENUS TRILLIUM 73 
Two of the sepals were half green, the other half colored like 
the petals. 
Dudley, W. R. Bull. Cornell Univ. 2: 99. 1886. 
Dudley records a plant of Т. erectum L. with green flowers, 
and one of 7’. grandiflorum Salisb. showing synanthy and vir- 
escence, the double form being cultivated. 
Fermond, Ch. Essai de phytomorphie 2: 298. Paris. 1886. 
The author speaks of isolation and displacement of single 
leaves. 
Foerste, A. F. Bot. Gaz. 16: 163. 1891. 
A specimen of 7. sessile L. is described having a whorl of 
4 leaves, and flower parts in threes but partly arranged as 
though in fours, 1.е., а вера! takes the place of а petal, and 
one segment is half sepal, half petal. 
Foerste, A. F. Bot. Gaz. 19: 460-465. 1894. 
The following conditions in 7. sessile L. from Dayton, 
Ohio, are carefully described, showing the phyllotactic ar- 
rangement of parts: (1) leaves and flower parts all in fours, 
tetramerous; (2) partly with leaves decussate in pairs, sta- 
mens and stigmas in threes, other abnormalities; (3) a sim- 
ilar condition with an apparent ‘‘attempt to maintain a 
quaternary phyllotaxy, after numerically they have gone over 
to the normal ternate form’’; (4) whorls of parts 3, 4, 3, 4, 
3, 4, but quaternate position maintained even when the num- 
ber of parts is 3. 
The detailed description of one of the specimens is as fol- 
lows: ‘‘A pair of opposite broader leaves, followed in decus- 
sating order by a pair of narrower leaves,’’ an outer and an 
inner pair of sepals, then 4 petals decussating with the two 
sets of sepals taken as a whole, 4 outer stamens, 4 inner sta- 
mens, and an ovary with 4 styles. 
Osband, Lucy A. Am. Nat. 28: 706. 1894. 
At Ypsilanti, Mich., was found a plant of Т. grandiflorum 
Salisb., double, having 2 sets of sepals and 2 of petals, the 
