A Handbook of Some South Indian GrassesRangachari, K.
Science
A Handbook of Some South Indian Grasses
Rangachari, K.
Grasses -- India, South; Plants -- India, South
1. Spike; 2. spikelet; 3 and 4. first and second glumes; 5 and 6. third
glume and its palea; 7. ovary and anthers.]
The _spikelets_ are 1/16 inch long, oblong-lanceolate, pale, crowded,
glabrous, shortly pedicelled on thinly scaberulous filiform short
branches. There are three glumes in the spikelet, and all the glumes are
membranous and thin. The _first glume_ is a little shorter than the
second and about two-third the length of the third glume and 1-nerved.
The _second glume_ is a little shorter than the third or equal to but
not longer, oblong-lanceolate, subacute or obtuse, 1-nerved and
obscurely scaberulous at the back along the nerve. The _third glume_ is
broadly oblong, subacute or obtuse, 1-nerved, glabrous, with a palea as
long as the glume; the _palea_ is 2-nerved, oblong and truncate at the
apex. _Stamens_ are three and anthers are pale greenish yellow.
_Stigmas_ are pale. _Lodicules_ are two, small.
This grass is an excellent one for binding the soil and may also prove
successful as a fodder grass. It usually flourishes in moist situations,
in sandy loams and rich heavy soils.
_Distribution._--Plains throughout India and Ceylon.
[Illustration: Fig. 181.--Sporobolus coromandelianus.]
=Sporobolus coromandelianus, _L._=
The plant is a densely tufted annual varying in size with the nature of
the soil, small and stunted in hard dry soils and large and spreading in
rich loose and moist soils.
The stems are closely spreading on the ground, rooting sometimes at the
lower nodes, branching freely, profusely leafy at the base, covered by a
few scale leaves, and 2 to 12 inches long.
The _leaf-sheath_ is glabrous, faintly and finely striate, distichously
imbricate, compressed, somewhat keeled, outer margin ciliate, and
bearded at the mouth. The _ligule_ is a thin short membranous ridge with
a fringe of dense fine hairs. The leaf-sheath enclosing the base of the
peduncle is rather long, glabrous with a tuft of short hairs at the
mouth.
The _leaf-blade_ is green without any glaucousness about it, 1/2 to 6
inches long, 3/16 to 1/4 inch broad, lanceolate or linear-lanceolate,
flat, acuminate, slightly coriaceous, many-nerved with a prominent
midrib, scaberulous throughout, with a few long scattered deciduous,
tubercle-based hairs towards the base, base subcordate, margin
cartilaginous, scabrid and finely serrulate.
[Illustration: Fig. 182.--Sporobolus coromandelianus.
1. Portion of a spike showing the verticillate arrangement of the
branches and the glands; 2. spikelet; 3. first glume; 4 and 5. second
and third glumes; 6. palea of the third glume; 7. anthers and ovary; 8.
grain.]
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