Hitchcock — Opening of Buds of Some Woody Plants. 135 
Vitis riparia, Mx. Buds rupturing the bark sometimes 
two superposed. Each leaf protected by its two hairy stip- 
ular scales. Vernation straight but inclosing the remainder 
of the bud. Apr. Ist. 
Cissus Ampelopsis, Pers. Muchas in V. riparia, but stip- 
ules and young leaves thinner and nearly smooth. May 3d. 
Ampelopsis quinquefolia, Mx. Buds one to three, rupturing 
the epidermis. Scales four. Leaves enclosed by their -en- 
larged stipules. First leaf perfect, 5-divided, lobes condupli- 
cate, arranged almost in a circle. Apr. 30th. 
i sculus arguta, Buckley. Buds swelling considerably 
before opening. Scales opposite, six to ten pairs, the inner 
successively larger and thinner, but no transition to leaves. 
First leaves with five leaflets. Leaflets involute. Apr. 9th. 
— Acer dasycarpum, Ehrh. Seales opposite, four pairs; the 
inner pairs ciliate-margined. Vernation plicate. Apr. 21st. 
Negundo aceroides, Moench. One of the first of the woody 
plants to show signs of pushing out leaves in spring. Scales 
opposite, four pairs. First pair with a roundish point; second 
pair about twice as long, apiculate; third pair about twice as 
long as the second, roundish at apex; fourth pair somewhat 
longer than the third, three-lobed at apex. First pair of 
jenves with three leaflets. Leaflets conduplicate, side by 
side, the margins of opposite leaves touching. Apr. 8th 
Staphylea trifolia, L. Scales opposite, two pairs. First 
set of stipules more than half as long as leaf, succeeding ones 
shorter. Leaflets involute, side by side. Apr. 22 
Rhus Toxicodendron, L. Buds naked or Rosnsioually with 
one or two scales. Leaflets conduplicate. May Sth. 
Rhus Canadensis, Marsh. Buds naked, the first leaf be- 
coming normal in size and shape. As all the internodes elon- 
gate there is but one ring separating the growth of successive 
years. (£2. glabra also has naked buds, with the first leaves 
very felty-pubescent.) Leaves plicate. May 5th. 
Amorpha fruticosa, L. Buds two, superposed, either or 
both developing. Scales several. First leaf pinnate, some- 
times imperfect. Stipules lanceolate, acuminate. Leaflets 
conduplicate, side by side. May 6th. 
Cercis Canadensis, L. Scales two. First leaf well-formed, 
