70 



INDIAN FOREST MEMOIRS. 



For this purpose and with the object of indicating at a glance most of the important 

 characters of the species of Saccharum and Erianthus dealt with in this paper the follow- 

 ing comparative table is given : — 



Saccharum sponta- 

 neum (Indian form). 



Frequently not form- 

 ing defined tufts. 



Calms annual 



Flowering culm solid 

 above, fistular below 

 attains 20 ft. and 

 dia. 0'6 in. 



Lamina glaucous, at- 

 tains 4 ft. in length 

 (Roxburgh gives 7 

 ft.) and 0'7 in. in 

 width. 



Midrib at base usu- 

 ally occupies more 

 than £ width of 

 lamina. 



Leaf-sheath not hir- 

 sute. 



Leaf-insertions not 

 bearded. 



Spikelets 0-08-02 in. 

 long (2 — 5 mm.). 



Pedicel 3 \— Is sessile 



spikelet. 

 Usually shorter than 



sessile spikelet. 



Joint 3 longer or 

 shorter than sessile 

 spikelet. 



Pedicel shorter than 

 proper joint.' 



Saccharum 

 arundinaceum. 



Saccharum Munja. 



Forms 

 tufts. 



well-defined 



Culms biennial ( ? or 

 triennial). Mature 

 basal portion of 1- 

 year (? or 2-year) 

 culms attains 6 feet 

 in length. 



Flowering culm solid, 

 attain* 24 ft. and 

 dia. 075 in. 



Lamina dark green, 

 attains 6 ft. and 

 width 2 in. 



In basal leaves 1 

 midrib at base occu- 

 pies J or less of the 

 width of the lamina. 



Leaf-sheath not hir- 

 sute. 



Leaf-insertions not 

 bearded. 



Spikelets 01— 015 in. 

 long (2| — £ mm.). 



Forms 



tufts. 



well-defined 



Culms biennial. Ma- 

 ture basal portion 

 of 1-year culms 

 usually 'not exceed- 

 ing 2 in. 



Flowering culm solid, 

 attains 18 ft. and 

 dia. 0'5 in. 



Lamina glaucous, at- 

 tains 7 ft. in length 

 and 1 in. width. 



In basal leaves 8 

 midrib at base occu- 

 pies £ or more of 

 width of lamina. 



Leaf-sheath not 



sute. 

 Leaf-insertions 



bearded. 



liir- 

 not 



Saccharum Griffithii. 



Spikelets 015-0'2 in. 

 long (4 — 5 mm.). 



Pedicel J to equal ' Pedicel J— 5 sessile 

 sessile spikelet. spikelet 



Joint usually longer 

 than sessile spikelet 

 (J to 1} sessile 

 spikelet). 



Majority of pedicels 

 shorter than proper 

 joint. 



Joint usually shorter 

 than sessile spikelet 

 (i to subequal 

 sessile spikelet). 



Majority of pedicels 

 shorter than proper 

 joint (rarely sub- 

 equal to proper 

 joint). 



Forms 

 tufts. 



well-defined 



Sacoharum Narenga. 



Duration of culms not 

 known. 



Flowering culm solid, 

 is said to attain 7 

 ft. 



Lamina glaucous, nar- 

 row. Has been seen 

 0'3 in. wide in her- 

 barium specimens, 

 but probably attains 

 a greater width. 



Midrib at base usu- 

 ally occupies $ or 

 more of width of 

 lamina. 



Leaf-sheath not 



sute. 

 Leaf -insertions 



bearded. 



hir- 

 not 



Spikelets 015— 0-24 in- 

 long (4—6 mm.). 



Pedicel J-f 

 spikelet. 



Joint j— f sessile 

 spikelet. 



Majority of pedicels 

 subequal to longer 

 than proper joint. 



Usually forms well- 

 defined tufts, but 

 sometimes spread- 

 ing. 



Culms biennial. Ma- 

 ture basal portion 

 of l-y«ar culms 

 usually not exceed- 

 ing 2 in. 



Flowering culm solid, 

 attains 16 ft. and 

 dia. 0'5 in. 



Lamina dark green, 

 attains 6 ft. in 

 length and 1 in. 

 width. 



In basal leaves 2 

 midrib at base occu- 

 pies I or less of the 

 width of lamina. 



Leaf-sheath hirsute 

 with bulbous-based 

 hairs. 



Leaf-insertions long- 

 bearded. 



Erianthus Eavennaa 

 (Indian form). 



Forms 

 tufts. 



well-defined- 



Culms biennial. Ma- 

 ture basal portion 

 of 1-year culms 

 usually not exceed- 

 ing 2 in. 



Flowering culm solid, 

 attains 19 ft. and 0-7 

 in. dia. 



Lamina dark green, 

 attains 6 ft. in 

 length and width 

 1"5 in. 



In basal leaves 2 

 midrib at base occu- 

 pies £ or more of 

 width of lamina. 



Leaf-sheath hirsute 

 with bulbous-based 

 hairs. 



Leaf-insertions short- 

 ly and finely beard- 

 ed. 



Spikelets 008— 013 in. Spikelets 013— 016 in. 

 long (2 — 3| mm.), long (3 J — 4 mm.). 



Pedicel §— I sessile 

 spikelet. 



Joint J — 1| sessile 

 spikelet, but usually 

 shorter than to sub- 

 equal spikelet. 



Majority of pedicels 

 shorter than to sub- 

 equal proper joint. 



Pedicel i— J sessile 

 spikelet. 



Joint i— § 

 spikelet. 



Majority of pedicels 

 longer than proper 

 joint. 



Callus hairs white, Callus hairs pale, J Call us hair pale, often Callus hairs yellow, Callus hairs usually Callus hairs purplish 

 1 J 2 — 7 times as long j shorter than to sub- purplish, shorter ' shorter than to sub- purple, subequal or brownish, shorter 



as sessile spikelet. I equal spikelet. 



than to 

 Bpikelet. 



subequal 



equal spikelet. 



spikelet. 



than to 

 spikelet. 



subequal 



1 Basal leaves are those which mature on the immature 1-year (? 2-year) culms. 



2 Basal leaves are those which mature on the immature 1-year culms. 



3 In recording the lengths of pedicels and joints of all species the basal pedicel and joint of each panicle-branch have been omitted as 

 these often vary irregularly. 



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