PSE OS hy a AL TY, Bis: MAEDA More oa Tape peewee are get em! Cyt, = See t 0c aOR mitch Tanne NS iy 
spy aig PaCS a NG aa dec ns aS 2/6 a ta 
as ee re a ys on =i ‘ n GOS iG pide oh 8 a Os wen ‘ a + oi Ws we ye 
‘ey = aN ee & uur To TR “ey 2 my r) NS geek i? ne mea 
i, 28. ° Structuraland Physiological Botany. 7 
se : f 1 a ; < Te & 
Sao ame “ E f 3 ‘ li ; ae A te! 
=< BE af 
a avuclet, surrounded by a common system of peripheral layers, are terme , 
ens \ ~ semi-compound (Fig. 42 d); compound when the divisions. which ae ae : 
ies 
a ie us 
4 M a 
es a 
¥f MALS *, " ye v 
’ i « 'f , a 
Ayers A pes 
a gS a ae a 
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ae afd ae 
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gue q 
a het 
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a e. i ‘A 
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er Ry sh “7m 
3 b. 
oo 
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= 
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f = 
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7 
ae eee Pe ae 
Acres 
fae e+ Puc. 46, —— Starch- Fic. 47. —.Chloro- Fic. 48.—Crystals from the leaf = 
oan grains from the la- _ phyll-grain of /P7- of Begonia heracletfolia; a, ~ i) 
foi >. tex of Luphorbia lea muscosa, en- a single quadrate octohedron; ~ 
tam as Shlendens. ( X-660.) closing four starch- 6, twin-crystals of the same Rei 
Fae grains, a (greatly form. (x 660.) 3, aE 
magnified). _ 
me separate the grains have advanced as far as the outer circumference 4 
*. . (Fig. 45). In opposition to these truly compound grains those are ~ ~~ 
| “ 
; 
{ ~ | el 
oon : 
} \' 4 . aie 
~ I 
Ec 48,-—Groups of crystals; a from the Fic. 50.—Cell from the stem of Aloé ae, Re 
-leaf of Begonia heracletfolia (quad- retusa, with raphides. (x 320.) Boh 
rate octohedra) ; 6 from the stem of eS 
 Urostigma elasticum. (x 660.) on ae ae 
called pseudo-compound where several are enclosed together in one nD 
vesicle, as in a grain of chlorophyll (Fig. 47). Only ina comparatively ‘ 
4 os) va 
