Tah. (en, 
PHALAANOPSIS rerraspis. 
Native of the Andaman Islands. 
Nat. Ord. OxrcHIpEx.—Tribe VANDER. 
Genus Puatmnopsis, Blume; (Benth. & Hook. f. Gen. Pl. vol. iii. p. 573.) 
Puatznopsis, tetraspis; acaulis, foliis 6-12 pollicaribus obovatis v. cuneato- 
obovatis apicibus acutis recurvis coriaceis 7-nerviis, scapo foliis breviore 
simplici v. ramoso 3-5 flore, floribus 2-2} poll. diam. niveis, sepalis basi 
columne insertis oblongo-obovatis obtusis v. subacutis, petalis sepalis 
consimilibus at paullo minoribus, labello sessili sepalis breviore, hypo- 
chilo brevi appendicibus 2 erectis carnosis truncatis apice retusis aureis 
latere exteriore cuspidatis instructo et acu erecta inter-appendices posita, 
epichilo lineari recurvo apice 2-lobo supra convexo ultra medium villoso, 
columna medio constricta. 
P. tetraspis, Reichb. f. Xen. Orchid. vol. ii. p. 146; et in Gard. Chron. (1881), 
vol. ii. p. 562, 656. Holfe in Gard. Chron (1886), vol. ii. p. 277. Hook. f. 
Fl. Brit. Ind. vol. vi. p. 30. Veitch, Man. Orchid. Part vii. p. 41. 
P. tetraspis was, up till the publication of Veitch’s in- 
valuable manual of Orchideous plants, a very imperfectly 
_ known species. In the “ Flora of British India” I have 
alluded to it as having flowers (which I had not seen) 
like those. of P. speciosa (also a native of the Andaman 
Islands), but waxy-white with two 2-awned basal calli on a 
hairy disk. 
A comparison with P. speciosa (see Warner, Orchid 
Album, vol. iv. t. 158, and Veitch, l.c. p. 38) shows how 
strong is the similarity between these species, the chief 
botanical difference lying in the structure of the appendages 
(or basal lobes) of the lip, which is in P. speciosa simply 
truncate with reflexed margins. In colour these species 
differ notably, that of speciosa being an amethystine 
purple, or rose-purple in some varieties. 
According to Veitch, P. tetraspis was discovered some- 
where in the Malay Archipelago by Thos. Lobb, and was 
first. described by Reichenbach from dried flowers. In 
1881 living plants were sent by Major-General Berkeley 
to Mr. Bull from the Andaman Islands, where it grows on 
OctopeR 1st, 1893. 
