368 CXXII. ORCHIDACE®. 
widely diverging at base. Glands nude. Stigma linear, 
transverse.—Harv. Thes. t. 101. 
A caulescent plant, with cordate-ovate or roundish, membranous, many- 
nerved, subpetiolate leaves, sheathing at base, and a many-flowered spike. 
There are two varieties, one with snow-white, the other with purple and 
green flowers; both found on the frontier. This charming plant was dis- 
covered on the Katberg by Mrs. Henry Hutton, whose name it deservedly 
bears. 
34. HALLACKIA, Harv. 
Perianth of Huttonea, except that both sepals and petals 
are fimbriate. Labellum concave at base, fimbriate. Anther 
supine; the cells parallel, close-lyig at base. Glands... 
Stigma .. .— Harv. Thes.t. 102. 
An elegant plant, with the aspect of Huttonea, from which it is known 
by the anther and the fimbriate sepals. The only specimens I have yet 
had for dissection are too imperfect to enable me to ascertain the exact 
structure of the stigma, etc. This plant was first sent to me by Mr. 
Hallack ; but I believe first discovered by Mr. Fannin, of the Dargle, 
Natal, a fact which I did not know when I published it in Thesaurus. 
35. CERATANDRA, Eckl. 
Perianth 2-labiate ; the upper sepal and the petals united 
in a galea (which is mostly pendulous and anterior); the 
lateral spreading, free. Labellum clawed, lunate, adnate to 
the face of the column, nude or with a fleshy appendix. 
Column horseshoe-shaped. Anther resupinate ; the cells 
distant, adnate to the stigmatic arms; glands nude. Stigma 
small, 3-lobed, vertical, in the fork of the arms.—Lindl. Orch. 
p. B63. 
Leafy herbs, drying black. Leaves very narrow, dilated at base, clothing 
the whole stem. Roots fascicled, fleshy. Flowers in dense spikes, yellow. 
—5 or 6 species, in the Western districts. 
36. OMMATODIUM, Lindl. 
Perianth 2-labiate ; the upper sepal and the unequally-lobed 
coneave petals united in a galea; the lateral spreading, free. 
Labellum hastate, sessile, adnate to the column, with a mem- 
branous, tubular appendix. Column membranous, truncate. 
Anther erect, with distant, subparallel cells, truncate at base ; 
glands nude. Stigma horizontal, with incurved arms.—Lindl. 
Orch, p. 365. 
A 2-3-leaved plant, with a many-flowered, elongate spike of rather small 
flowers. Nearly related to Pterygodium, but with a different anther.— 
Western district. 
37. PTERYGODIUM, Sw. 
Perianth 2-labiate ; the upper sepal and the very large, un- 
