THE TASMANIAN FLOBA. 275 



Creeping. Spike curved ... ... ... ... 1. i. incurvatus. 



Sub-erect. Spike straight ... ... ... ... 2. L. cylindricua. 



1. L. INCUBVATUS, Trin. Creeping, branched, or merely depressed, aboat & 

 inches long. Leaves narrow, very short. Spike 2-4 inches, slender, curved. Outer 

 glumes 2, rigid, acute, about 3 lines long, in a pair outside the spikelet, except in 

 the terminal flower, where they are opposite. 



Common in settled parts near the sea. Probably introduced. Considered 

 indigenous in South Australia, Victoria, New South "Wales, and New Zealand. 

 Common in Northern Hemisphere. 



2. L. CTLINDEICUS, Trin. Very similar to the last, but rather larger, depressed 

 at the base, sub-erect above. Leaves not very short, flat, rather narrow. Spike 

 straight or slightly curved, often 6 inches long. All but the terminal spikelet 

 with only one outer empty glume, otherwise the same details. 



Sandy Bay ; possibly elsewhere, but overlooked. Considered indigenous in 

 West Australia, South Australia, Victoria, and New South Wales. Common in 

 Northern Hemisphere. 



49. HORDEUM. 



Spikelets 1-flowered, .3 together, in alternate notches of the rhachis, forming a 

 dense spike. Outer empty glnmes 2, filiform, extending into an awn. Flowering 

 glume closely enveloping the fruit, terminating in a long awn, In most instances 

 only the central spikelet of the group is fertile. 



A small genus of temperate and sub-tropical parts, chiefly of the Northern 

 Hemisphere. 



H. MTTEINTTM, Linn. Tufted, 6 inches to 1 foot. Leaves flat, broad. Spike 1-3 

 inches, dense. Spikelets about 4 lines long, the awns 1-1^ inch. Outer spikelets 

 barren ; the empty glumes all dilated at the base, and ciliate. 



Very common. Introduced. European. 



M. maritimum. With. A smaller grass, depressed at the base. Leaves 

 short, narrow. Spike 1 inch. Empty glumes all filiform, not ciliate. 

 Rare. Possibly will get a foothold. European. 



H. nodosum, Linn. Similar to JS. murinum, but taller, the spike less 

 dense. Outer empty glumes all filiform. M. pratense, Huds. A 

 common European reported from Tasnaania, but that has not yet 

 established itself. 



GYMNOSPERMS. 



Spores of 2 kinds. The gametophyte very rudimentary, 'and that of the 

 megaspore developing without the sporange falling from the parent. The bract 

 usually developing an internal process or scale, but neither the bract nor the 

 scale forms an ovarian sack round the ovules. Sporangia in unisexual amenta. 



Only three tribes of the Coniferous class are represented in Tasmania. 



Taxinees. Ovuliferous scales not developed. Ovules , terminal, solitary, or, 

 when more than one,;the bracts become succulent and the ovules protrude. A 

 well-developed aril usually present. 



