70 Rhodora [APRIL 
NOTES ON HABENARIA. 
OAKES AMES. 
Habenaria dilatata var. media (Rydb.) n. comb.— Limnorchis 
media Rydb. Bull. Torr. Bot. Cl. 28: 618 (1901). 
The original specimen on which H. dilatata was based is in the 
herbarium of the British Museum. It was collected by Sir Joseph 
Banks in Newfoundland in 1766, and described by Pursh as Orchis 
dilatata in his Flora Americae Septentrionalis. The common New 
England form is considerably taller than the Banksian specimen and 
might readily be taken for a distinct species if it were not for perfect 
agreement in specific details. Strangely enough the form charac- 
teristic of the type is extremely rare in herbaria and is best matched 
by a series of specimens collected in high alpine bogs on Mt. Albert, 
Gaspé Co., Quebec, where they were found in August, 1905, at an 
altitude between 900 and 1050 meters by Collins and Fernald. ‘The 
range of variation between the type and the luxuriant specimens fre- 
quently found in New England is sufficiently enormous to induce 
caution where new species are contemplated. H. dilatata is a widely 
distributed species and consequently adaptable to conditions which 
have a marked influence on growth. An examination of large quanti- 
ties of material has convinced me that Dr. Rydberg’s Limnorchis 
media is simply a variety of H. dilatata characterized by yellowish- 
green flowers. The labellum is slightly rhombic-lanceolate and the 
rostellar glands are similar to those of H. dilatata. "Тһе living speci- 
mens which I have examined have all been deliciously fragrant as is 
the case with typical Н. dilatata. 
Habenaria blephariglottis var. conspicua (Nash) n. comb.— H. 
conspicua Nash Bull. Torr. Bot. Cl. 23:100 (1896) — Blephari- 
glottis conspicua Small Fl. Se. U. S. 313 (1903). 
'This variety differs from the type mainly in its longer spur, and is 
the common form in the southern states. 
Н. х Canbyi hybr. nov. (H. cristata X Н. blephariglottis). 
This interesting natural hybrid was collected near Lewes, Delaware 
in July, 1878, by Wm. M. Canby. At the time it was discovered its 
hybrid origin was suspected. The following transcript from the 
collector's notes is of interest: 
