ENGELMANN—DICGCIOUS GRASSES. 441 
Fig. 4—Diagram of same; the letters correspond with those in the last 
Fig. 5.—Rhachis of 3 spikelets, with ‘one base of 2 involucral leaves, in 
e axil of the lower one a b 
Fig. 6. tie and upper glume of the aan spikelet of a — in fruit; 
the upper is attached to the back of the lower glum 
Fig. 7.—One of the other nagar oso seen from the inside of the nage oe 
hibiting the Sct glume, part of the upper one, and the 
of the palea 
Fig. 8.—Different rw of the lower glume; a., narrow and obtuse; d. 
foli ees per half—a ve ery rare occ occurren' 
Fig. 9.—Lower palea of the fab a., from the inside, rolled up; 5. out- 
wee go gegen 
Fig. 10.—Same of the fruit ; a. from the inside, folded around the sedge 
moose 8 oth d orsal nerves of which are visible; b., 
Fig. 11.—Upper palea ; a., from the inner side, with the stigmata protru- 
ding; 5. same from the back, showing both nerves; ¢., upper 
palea fsctading the ripe seed, seen from the inside ; scales visi- 
e. 
Fig. 12.—Scales ; cate, b. emarginate-bilobed ; more magnified. 
Fig. 13.—Ovary with th the styles, more magnified. At ee base of = 
ovary one of the 3 rudimentary stamens and both scale 
visible. 
= Sai - more mceue with all three rudimentary stamens; 
¥ 
—Part of nly a stigmatic hai, highly ma 
ie ig. 16. Vert of a fruit-beari a gpme a exhibiting both 
glumes, (the the cake upper one the longest and much thickened) 
Fi th palex and the grain. 
ig. 17. ie ; a. seen from the convex inner side (turned towards the 
upper ‘palea); b. horizontal, and ¢. vertical section of same; 4. 
b. more magnified. ae 
MonantTHocHio# LITTORALIS. 
Pl. XIIL., Fig. 1—Female plant in flower; here and there the small pa 
y the e protruding stigmata. Natural 
are 
pease of the same plant, showing ‘te manner of rami 
ig. 8. —Spikelet consisting of the wrens pA eae 
