14 BOTANICAL GAZETTE. [ Jan., 
leaved, the former sometimes wanting, the latter awl-shaped. 
Flowers white. August to October. 4 
1, €.Canadense Torr. & Gray, Fl.i. 619. Leaflets pinnat- — 
ifid: lateral wings nearly as broad as the seed; oil-ducts 2 
or 3 in the intervals, sometimes 1 or 4.—-Swamps and cold 
cliffs from Vermont to Minnesota and northward, also south- 
ward along the high mountains to N. Carolina, and in Indiana.’ 
The discovery of a quantity of fine fruiting specimens has 
enabled us to make a careful examination of fruit characters. 
Bentham & Hooker have referred this species to Selinum, 
which is characterized by single oil-ducts in the intervals, 
rarely 2. Their decision, however was based upon imma- 
ture fruit, while our recently collected specimens show 2 and 
3 to be the usual number of oil-ducts in the intervals, some- 
times 1, and rarely 4. This fact would put the species in 
Ligusticum as defined by Bentham & Hooker. Its char- 
acters of broad lateral wings, inflated petioles, and pinnately 
compound leaves, however, make it so distinct from our own 
Ligusticums that it seems proper to retain the genus Conio- 
selinum for this species. Possibly Conioselinum Fischeri is 
Angelica group than to the Selinew. In fact, its broad lateral 
wings and only somewhat prominent dorsal and intermediate 
ribs at once separate it from Selinew and include it among 
Angelicee even to a superficial observer, a relationship which 
the minute structure of the fruit confirms. It is a question 
angelica in a single genus. The only characters which serve 
to separate it from them are the much more dissected foliage 
(which does not count for much) and the absence of prom- 
cially conspicuous under the lateral ribs. These characters 
can be made to separate Conioselinum from the other mem- 
bers of the Angelica group, but whether they should be con- 
sidered generic or sub-generic is a matter of doubt. It seems 
best for the present to consider this enus as intermediate in 
its characters between Selinex and ngelicez. 
1BoTANICAL GAZETTE, xi, 338, 
