Aeranthus. ] 
orchldejs. (S. Moore.) 
353 
about \ in. long. Anther-cap pointed in front ; pollen-masses spheroi- 
dal ; caudicles linear, twisted, and rostellum of two broad, obtuse lobes 
projecting at right angles to the column. Bot. Mag. t. 6034. A. 
grandiflorus, Lindl. Gen. and Bp. Orch. 243 (in part). Dendrobium 
arachnites, Thouars , Orch. Afr. t. 88. 
Mauritius, high parts of the island, Bojer ! ; Mont liosamond, Bouton ! Ayres ! 
Endemic. 
Var. BalfourI. Leaves 10 in. long. Lateral sepals 1£ in. in length. Kodriguez. 
Balfour ! Described from a living specimen obligingly communicated by its dis- 
coverer. 
11. A. ? Calceolus, S. Moore. Leaves oblong-lanceolate, obliquely 
emarginate, 4-5J in. long, -i—f in. broad, imbricate on a thick, copiously 
rooting stem. Raceme or panicle erect, wiry, clothed with several 
loose, sheathing scales; bracts ovate, loose, T V— g- in. long; flowers \ in. 
diam. ; pedicels in. long. Sepals lanceolate, nearly ^ in. in length. 
Petals a little narrower and shorter. Labellum ovate-lanceolate, 
acuminate, concave round the column ; spur sleuder, clavate, about 
| in. long ; pollen-masses ovoid, sessile on oblong glands ? Angrsecum 
Calceolus, Thouars , Orch. Afr. t. 78 ; Rich. Orch. Maur. 76, t. 10,/ 4; 
Lindl. Gen. and Bp. Orch. 248. A. carpophorum, Thouars , Orch. Afr. t. 
76 ; Lindl. Gen. and Bp. Orch. 247 (?). 
Mauritius, high places towards centre of island, Bojer ! Moka, Dupont ! Also 
Bourbon. After many trials I am unable to place this species definitely ; it does 
not appear to be a true Angrcecum. 
17. LISTROSTACHYS, Rchb. f. 
Sepals and petals spreading, equal, or the petals a little the smaller. 
Labellum more or less unlike the sepals and petals, entire or 
lobed, with a short and obtuse or long, slender and tapering spur. 
Column short, terete, straight or incurved ; pollen-masses 2, attached 
each to a tapering caudicle ; gland single ; rostellum elongate, en- 
tire or lobed. — Epiphytes with the habit of Angrcecum. Leaves usually 
fleshy. Flowers in dense spikes or erect or pendulous racemes, white, 
green, or yellow. Distrib. The genus would appear to be restricted 
to Tropical and South Africa and the neighbouring islands. 
Spikes axillary, dense-flowered ; flowers minute ; label- 
lum at right-angles to column, entire 1. L. Pescatoriana. 
Bacemes leaf-opposed, rather lax-flowered ; flowers at 
least ^ in. diam. ; labellum convolute round column, 
3 -lobed ; mid-lobe linear, much smaller than the broad 
lateral ones. 
Leaves oblong, 1-2 in. long ; flowers 1 in. diam. ; spur 
nearly £ in. long ; lobes of rostellum directed up- 
wards and forwards 2. L. polystachts. 
Leaves linear-oblong, 2|-3 in. long ; flowers | in. 
diam. ; spur -n in. long ; lobes of rostellum directed 
vertically upwards . . 3. L. Aphrodite. 
2 A 
