MISCELLANEOUS NOTES, 429 
already mentioned, render them practically three-cornered, But no mistake is 
possible in either case as to the species to which the plant belongs, since one 
has three, the other only two, rows of leaves and Spore-cases. The following 
brief diagnosis will enable their easy determination :-— 
Plant erect or suberect: branches triquetrous, many times 
strictly branched: leaves in 3 rows; ultimate branches Psilotum triquetrum, Sw. 
thr e-cornered, sometimes almost round, about 3!’ in dia. 
Plant pendulous: bra’ ches senom Cl less frequently ard 
Ss tal ly oe som cont 
across 
The erect fastigiate habit of the first, the hanging spreading habit of the 
second generally sufficiently distinguish the two. P. triquetrum is usually 
7-8 in. high, but dwarf specimens occur (13-3 in, being the greatest height of 
Specimens obtained by the writer on Barren Island) ; on the other hand, it is 
often 2-22 feet high, 
The general distribution of P. triquetrum is wider than Dr. Dalvado’s note 
would indicate. It is found in South America, Central America, M>xico, West 
Indies, Florida, Africa, Madagascar, Seychelles, India, Indo-China, Laccadive 
Islands, Ceylon, Andamans, Malaya, North Australia, Polynesia, from Fiji 
to Sandwich Islands. P, complanatum is equaly widely distributed ‘hough itis 
the least common of the two except in Malaya and apparently the Seychelles, 
The Indo-Malayan distribution, as_ testified by specimens in the Calcutta 
Herbarium, is given in full below :— 
1, PsiLotum TRIQUETRUM, Sw. 
Inp1a: Bengal ; Dacca, Clarke ! Barisal, Clarke ! Central India ; Pachmari, 
Mrs. Morris! Duthie! Ceylon; centre of island, Thwaites ! 
Walker! Thomson! Watson! Laccadives ; Minikoi, Alcoch ! 
HIMALAYA: Kumaon, Thomson ! Nepal, Wallich ! 
INDO-CHINA : Assam; Sibsagar, Masters! Khasia Hills, Simons! Burma : 
Taong Doung Mis., Wallich! Barren Island, Prain! Siam, 
Finlayson | 
MALAYA : Peninsula ; Penang, Wallich ! Malacca, Griffith! Maingay ' Perak, 
Kunstler! Wray! Archipelago ; Java, King! Forbes! 
2. PsILOTUM COMPLANATUM, Sw. 
Mazaya: Peninsula; Penang, Wallich! Perak, Kunstler! Archipelago ; 
Borneo, Lobb ! 
The plant referred to by Dr. Dalgado is therefore not very rare, but as it 
happens to be mentioned, the writer wishes to invite members who may be 
interested in the matter to look not only for P. triquetrum, but for the other 
species as well. Both are found in the Mascarene Islands to the west, and 
both also occur in Malaya and Polynesia to the east of India ; there is there- 
fore no good reason why both should not be found, if carefully looked for, 
in the Indian Peninsula as well, 
