246 (3 4 8 ^ * RHodora [OCTOBER 
HABENARIA LACERA, R. Br. Lower leaves lanceolate or linear- 
lanceolate, narrow, more acute, length to 21 cm., width to 4.5 cm., 
ratio 5-7 : 1. Raceme elongated, loosely many-flowered. Flowers 
yelldwish-green. Sepals oblong-oval, less obtuse, lateral deflexed, 
somewhat twisted, vertical. Petals ligulate, obtuse or sometimes 
slightly emarginate, entire, about equal in length to upper sepal. 
Average width of lip about 15 mm.; divisions narrow, linear or nearly 
so, deeply split, fringe of’ lateral divisions extending more than half 
their length, ultimate segments few, capillary, long. Arms of column 
produced, acuminate, not thickened. Glands of pollen-masses facing, 
oblong-linear.  Pollen-masses long, slender club-shaped; stalk as 
long as or somewhat longer than mass of pollen ; pollen golden-yel- 
low. Orifice of nectary obstructed in middle by projection from base 
of stigma. Spur of about equal length with ovary, incurved, clavate, 
considerably enlarged below. Ovary long, 12-15 mm. 
HABENARIA PSYCHODES X LACERA. Lower leaves as in 77. lacera 
length to 15 cm., width to 3 cm., ratio 5-7 : t. Raceme oblong, 
loosely fewer-flowered. Flowers white tinted rose to light rose-purple. 
Sepals round-oval, obtuse, lateral deflexed, plane, vertical. Petals 
cuneate-spatulate, obtuse or slightly retuse, denticulate above, slightly 
surpassing upper sepal in ratio of about 6:5. Average width of lip 
about r2 mm. Divisions narrow-cuneate, deeply cleft as in Æ. /acera, 
few, averaging twice as many as in /acera, capillary, long. Arms of 
column as in Æ. fpsychodes or slightly more acute. Glands of pollen- 
masses slightly oblique, elliptical or slightly kidney-shaped. Pollen- 
masses intermediate in length, club-shaped ; stalk ł length of mass 
of pollen or rather more; pollen greenish-yellow. Somewhat two- 
lobed projection from base of stignra not completely obstructing 
orifice of nectary in middle as in /acera. Spur longer than ovary, 
clavate, much enlarged below. Ovary short or intermediate, 9-12 
mm. Locality — a very wet meadow in Pownal, Vermont, July 22, 
1898 (MW. W. White & A. L. Andrews), Aug. 5, 1901 (A. ZL. 
Andrews). 
In a family of many species, variable and often of close relation- 
ship, where moreover cross-fertilization is habitual as in the Orchid- 
aceae, hybridization is occasionally to be expected and experiments 
with the tropical species under artificial conditions have yielded a 
long array of hybrids presenting characteristics generally interme- 
diate between those of the parent plants. Botanists have accordingly 
described peculiar intermediate forms found under proper conditions 
as probable natural hybrids. So the tribe Ophrydeae to which 
Habenaria belongs has yielded, especially in Europe where repre- 
sented by many related species, a number of forms which European 
botanists describe as natural hybrids, mostly in the genera Ophrys 
