FREE BOOKS

Author's List




PREV.   NEXT  
|<   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76   77   78  
79   80   81   82   83   84   85   86   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   102   103   >>   >|  
re from 1/2 to 2 inches; _rachis_ is slender, flexuous, flattened, scaberulous, with a few long hairs scattered singly along the margins or without these hairs. [Illustration: Fig. 98.--Panicum distachyum. 1 and 2. Front and back view of a portion of a spike; 3, 4, 5, and 6. the first, second, third and the fourth glume, respectively; 5a and 6a. palea of the third and the fourth glume, respectively; 7. anthers and ovary.] The _spikelets_ are glabrous, ovate-oblong, acute, 1/8 inch, 1- or 2-seriate, subsessile, pale green, occasionally purplish on one side. There are four _glumes_. The _first glume_ is membranous, broadly ovate, obtuse with margins overlapping at the base, hardly half the length of the third glume, usually 5-nerved but occasionally 7-nerved. The attachment of the first glume is not close to that of the second glume but is far lower. The _second glume_ is ovate-acute, 7-nerved. The _third glume_ is equal to the second, 5-nerved, paleate, empty; the _palea_ is narrow, hyaline, acute. The _fourth glume_ is ellipsoidal, obtuse, chartaceous, minutely and obscurely rugulose, faintly 3-nerved, with the base somewhat thickened. _Palea_ is similar to the glume in texture. _Anthers_ are orange-yellow. _Lodicules_ are minute and fleshy. Style branches are purple. This grass is fairly common in open and loamy and sandy soils. The form (var. _brevifolium_, Wight & Arnott) is fairly common in Coimbatore District. _Distribution._--Plains of India and Ceylon. Not recorded from the Bombay Presidency. It occurs in China, Malaya and Australia. [Illustration: Fig. 99.--Panicum interruptum.] =Panicum interruptum, _Willd._= This is a large perennial grass with stems reaching 5 to 6 feet in length, flourishing in marshes and in the edges of ponds and tanks. The stems are long, stout and spongy below, ascending from a creeping and rooting or floating root-stock; the lower internodes are often 1/2 inch or more in thickness, with nodes bearing in fascicles long stout roots clothed with fine lateral roots; and the upper internodes are long and slender. The _leaf-sheath_ is glabrous, striate. The _ligule_ is a short broad membrane. The _leaf-blade_ is soft, flat, many-nerved, linear, finely acuminate, margins smooth, base rounded or subcordate, glabrous, 6 to 12 inches long, 1/4 to 1/2 inch broad. The _inflorescence_ is a strict spike-like panicle, 6 to 12 inches long by 1/4 to 1/3 inch broad, cylind
PREV.   NEXT  
|<   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76   77   78  
79   80   81   82   83   84   85   86   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   102   103   >>   >|  



Top keywords:
nerved
 

fourth

 

Panicum

 

inches

 

margins

 

glabrous

 
slender
 
internodes
 

obtuse

 
interruptum

common

 

Illustration

 
occasionally
 

fairly

 

length

 

perennial

 

marshes

 

flourishing

 
reaching
 
Presidency

Distribution

 

Plains

 
District
 
Coimbatore
 

brevifolium

 

Arnott

 

Ceylon

 
Malaya
 

Australia

 

occurs


cylind

 

recorded

 

Bombay

 

panicle

 
strict
 

membrane

 
striate
 

ligule

 
inflorescence
 

acuminate


smooth

 

subcordate

 

finely

 
linear
 

sheath

 

floating

 

rooting

 

ascending

 

creeping

 
rounded