FREE BOOKS

Author's List




PREV.   NEXT  
|<   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   102   103   104   105   106   107   108   109   110   111  
112   113   114   115   116   117   118   119   120   121   122   123   124   125   126   127   128   129   130   131   132   133   134   135   136   >>   >|  
shorter than the third, deeply cleft into two lanceolate acute lobes, 3-veined at the base; awn up to about 2/3 inch long; _palea_ is linear lanceolate. Stamens are three and _lodicules_ are small and cuneate. The pedicelled spikelet is very variable. It is shorter than the sessile, with obscure transverse ridges and may consist of four glumes, but without an awn to the fourth glume; sometimes this spikelet is reduced to a single glume. The grain is broadly oblong, brownish and compressed. _Distribution._--Throughout India and Ceylon. [Illustration: Fig. 133.--Ischaemum pilosum. A and B. Ligules.] =Ischaemum pilosum, _Hack._= It is a tall, robust, perennial grass with rhizomes producing numerous creeping stolons densely covered with scaly-sheaths. The aerial stems are erect, freely branching at the base, slender, 2 to 3 feet long, glabrous. The _leaf-sheath_ is glabrous. The _ligule_ is a distinct glabrous membrane, 1/8 inch long, rounded. _Nodes_ are glabrous. The _leaf-blade_ is linear, finely acuminate, glabrous but bearded at the base, 6 to 12 inches long and 1/8 to 1/3 inch broad. The _inflorescence_ consists of two to six softly hairy spikes which are yellow or brown 1 to 4 inches long. Joints and pedicels are slender, sparsely ciliate. [Illustration: Fig. 134.--Ischaemum pilosum. 1. A sessile and a pedicelled spikelet; 2, 3, 4 and 6. the first, second, third and the fourth glume, respectively, of the sessile spikelets; 5. palea of the third glume, 7. palea of the fourth glume; 8. ovary; 9, 10, 11 and 12. first, second, third and the fourth glume, respectively, of the pedicelled spikelets; 13. palea of the fourth glume.] The _sessile spikelets_ are narrowly lanceolate, 3/4 inch long, with long hairs at the base. The _first glume_ is dorsally hairy, or glabrous, narrowed from the middle upwards, chartaceous, with incurved margins and six or seven anastomosing nerves. The _second glume_ is longer than the first, laterally compressed, ovate-lanceolate, acuminate, chartaceous, glabrous but often with long hairs on the keel towards the upper half, 5-nerved, the lateral nerves anastomosing. The _third glume_ is a little shorter than the second, linear-oblong or lanceolate, paleate; _palea_ is membranous, nerveless, and encloses three stamens. The _fourth glume_ is equal to the third glume in length, membranous, hyaline and divided almost to the middle into two acute lobes with an awn 1/4
PREV.   NEXT  
|<   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   102   103   104   105   106   107   108   109   110   111  
112   113   114   115   116   117   118   119   120   121   122   123   124   125   126   127   128   129   130   131   132   133   134   135   136   >>   >|  



Top keywords:
glabrous
 

fourth

 

lanceolate

 
sessile
 
spikelet
 
pedicelled
 

shorter

 

Ischaemum

 

spikelets

 

linear


pilosum
 
oblong
 

anastomosing

 

inches

 

compressed

 

nerves

 

chartaceous

 

slender

 

middle

 

Illustration


acuminate
 

membranous

 

consists

 
softly
 

sparsely

 
pedicels
 
Joints
 

ciliate

 

yellow

 

spikes


laterally

 

paleate

 
nerveless
 
lateral
 

nerved

 
encloses
 

stamens

 

divided

 

hyaline

 

length


upwards

 

narrowed

 
dorsally
 

narrowly

 
incurved
 
margins
 

inflorescence

 

longer

 
reduced
 

glumes