Rhodora 
JOURNAL OF | 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 3 October, rigor No. 34 
A NATURAL HYBRID BETWEEN HABENARIA LACERA 
AND H. PSYCHODES. 
A. LE Roy ANDREWS. 
IN an earlier number of Ruopora (II, 114) I mentioned a form 
of Habenaria which I had noted growing with Æ. /acera and H. 
Psychodes as apparently a hybrid between them. This opinion, based 
merely upon the general appearance of the plant, is sustained, even 
better than I had anticipated, by minute examination, and I accord- 
ingly venture to report results. 
The plant was first noticed by Mr. White, a classmate in Williams 
College, and myself, late in July, 1898. It wasat once marked as 
distinct and, not having seen ZZ fimbriata at that time, we were 
inclined to treat it as that species with question marks. Its possi- 
ble hybrid origin, which I suggested in RHODORA, only occurred to 
me later. Opportunity for further investigation has been lacking 
until the present summer. On Aug. 5, 1901, the same locality was 
again visited and specimens of all forms taken. Comparison of the 
three types yielded the following characters. 
HABENARIA PSYCHODES, Gray. Lower leaves oblong or oblong- 
lanceolate, obtuse or acute, broad, length to 20 cm., width to 6 cm., 
ratio of length to width 3-5 : i. Raceme cylindrical, densely many- 
flowered. Flowers rose-purple. Sepals round-oval, obtuse. Lateral 
deflexed, concave, horizontal, spreading. Petals cuneate-obovate, 
retuse, denticulate above, surpassing upper sepal in ratio of about 
7:5. Divisions of lip broadly cuneate, lacerate; fringe of lateral 
divisions extending generally less than half their length; ultimate 
segments many, short, acute. Average width of lip r2 mm. Lateral 
projecting arms of column obtuse or rounded, much thickened. 
Glands of pollen-masses oblique, orbicular. Pollen-masses short, 
thick; stalk 4 length of mass of pollen or less; pollen yellowish- 
green. Orifice of nectary unobstructed. Spur longer than ovary, 
hardly larger below. Ovary short, 7-10 mm. 
