1114 ACERIS. [CLASS XX. ORDER I. 
spreading, petals ovate, concave, connivent. Lip linear, obtuse, 
entire, about as long as the sepals. Spur slender, filiform, slightly 
swollen towards the end, the apex pointed, or it is perfectly cylin- 
drical, and about half as long again as the ovarium. Pollen masses 
with cells parallel to each other, entire or notched at the end. 
Habitat.—Groves and thickets; not unfrequent, and mostly grow- 
ing with the following. 
Perennial; flowering in June. 
The flowers of this species are smaller, and less numerous than the 
following, the leaves smaller, more erect, and more tapering at the 
base ; the lip is ligulate, and the cells of the anthers parallel. 
4 H. chloran'tha, Custor., (Fig 1334.) Yellowish Green Butterfly 
Habenaria. Lip ovate lanceolate, greenish; spur cylindrical, club- 
shaped, twice as long as the ovarium; sepals ovate oblong, acute, 
spreading, rather larger than the connivent petals; bractea ovate 
lanceolate, as long as the ovarium, three ribbed, and netted; pollen 
masses with divaricating cells ; radical leaves spreading, obovate. 
Platanthera.—Lindley, Synopsis, p. 330.—Orchis bifolia.—English 
Flora, vol. iv. p. 9—English Botany, t. 22.—Habinaria bifolia— 
Hooker, British Flora, ed. 4. vol. iv. p. 315. var. PB. 
In general appearance this is similar to the last species, but the 
leaves are larger, broader, spreading, and very much less tapering at 
the base, the flowers are larger, a greener colour, the spur thicker, 
and more club-shaped, the lip ovate lanceolate, and the whole plant 
is larger and stouter. These, together with the broader diverging 
anthers, are the characters which distinguish it from H. bifolia. 
Habitat.—Groves and thickets; not unfrequent. 
Perennial; flowering in June. 
GENUS IV. A’CERAS.—Brown. Man Orchis. 
Nat. Ord. Orcuip'Ex. Juss. 
Gen. Cuan. Sepals and petals herbaceous, personate, ringent, 
helmet-shaped above, lip three-partite, without a spur at the 
base. Glands of the stalks of the pollen masses enclosed in a 
common pouch.—Name «@., without; and xeu%s, a horn; so 
named in allusion to the lip being without a spur. 
1. A. anthropo'phora, Br. (Fig. 1235.) Green Man Orehis. Lip 
longer than the ovarium, three-cleft, linear, the middle lobe bifid. 
English Flora, vol. iv. p. 25——Hooker, British Flora, ed. 4. vol. i, 
p- 316.—Lindley, Synopsis, p. 262.—Ophrys, Linn.—English Botany, 
t. 29. 
Tubers ovate, and as well as the radicles clothed with woolliness. 
Stem erect, about a foot high, a smooth bright shining green, clothed 
