1922 CLIII. GRAMINE^. [Bambusa. 



1. B. IMEoreheadiana (after the Hon. B. D. Morehead, M.L.C.)) Bail. Bep. 

 Hot. B41. Ker. Exped. 1889 and 8yn. Ql. Fl. 3rd Suppl. 87. The Queensland 

 Climbing Bamboo. A rampant climbing plant sealing the tops of the highest trees 

 of the scrubs, and hanging in festoons from the branches, probably the stems 

 extend over 200ft. in length. The largest diameter of stem measured 2in., the 

 hollow or pipe about one-third of its diameter ; length of internode, under 1ft.; 

 the whole plant more or less clothed with dark-coloured bristle-like hairs or scales ; 

 stem-buds hemispheric fin. diameter ; stem-leaves with a lance-like lamina 2 or 

 3in. long ; the leafy shoots which are numerous from the upper nodes, are much 

 flattened, and the lamina of leaf measures from 6 to lOin. long and from 1 to 

 2in. broad, glabrous, with 6 or 7 parallel nerves on each side of the midrib, 

 points filiform, the margins entire except for a few distant minute teeth. 



Hab.: Harvey's Creek, Bussell Biver. 



Baron von Mueller, in the Aust. Journ. of Pharm, 1886, drew attention to a QueenBland 

 epecies of Bambusa, but the specimens and the collector's notes he thought insufficient to name 

 the species ; and even now, not having seen the inflorescence, by some it may be deemed too 

 early to have given to it specific distinction, jjut the uncertainty of the flowering of plants of the 

 genus, and that the stems are being put to many useful purposes, is, I consider, suGBcient 

 excuse ; and when the flowers and fruit are obtained the species can then be placed in the tribe 

 and genus to which it may prove to belong. 



Obder CLIV. LYCOPODIAGEJE. 



Stem or rhizome bearing true leaves, either linear, or small and 1 -nerved, or 

 reduced to minute scales. Spore-cases solitary or few together, sessile in the 

 axils of the leaves or of the bracts of a terminal spike, either all similar or of two 

 kinds, larger ones macrosporangia containing a few larger spores or macrospores, 

 and smaller microsporangia, containing numerous smaller often microscopic 

 microspores, the differences now generally admitted to be sexual. 



The order is spread over nearly the whole globe. 



Leaves linear, on arhizone often submerged. Spore-cases of 2 kinds, lolitary 

 in the axils or half-enclosed in the dilated bases of the leaves 1. Isoetes. 



Stems branching, with small leaves usually crowded in 4 rows. Spore-cases 

 solitary within the bracts of terminal spikes or the upper leaves of the 

 stem. 



Spore-cases and spores all similar 2. Lyoopodittm. 



Spore-oasec and spores of two kinds. Plants usually weaker or smaller 



than in Lycopodium ,3. Selaoinella. 



Small floating plant with small crowded leaves. Spore-cases of 2 kinds in 



the axils of some of the stem-leaves .... 4. Azolla. 



Stems leafy or with distant scales. Spore-cases 2 or 3 together, united into 

 a 2 or 3-celled capsule or sorus, sessile at the base of bifid bracts or scales. 



*■ tems simple, leafy. Sori usually 2-celled . 5. Tmesipteeis. 



Stems diehotomous, with minute distant scales. Sori usually 3-eelled . . 6. Psiloicm. 



1. ISOETES, Linn. 

 (From two Greek words, isos, equal, and etos, the year— on account of its leaves 

 remaining throughout the year). 

 Aquatic plants entirely submerged or rarely terrestial in swampy or wet sandy 

 places. Leaves linear and thick or subulate, crowded on a short thick rhizome, 

 dilated and concave at the base, the margins of the cavity often more or less 

 folded over the spore-cases. Spore-cases sessile at the base of the leaves, solitary 

 membranous, of two kinds, those of the outer leaves filled with spherical 

 macrospores, marked with a transverse raised line, and above it 3 radiating 

 raised lines, those of the inner leaves filled with minute powdery microspores. 



A small genus having nearly the general range of the order except in hot or dry climates. 



