a tr y > Lae es | “4. Sig F AG och & 1 Sake > i te Per yo |, A. eae a< ” 
ar ay A re edt ! ee Ve 2 Vy fo as . a - 1 1% ey 4 
; t }. ; 7 
‘ > “ 
Aah oe Bo jrnction al ea d Physiological Botonge?} 
fi 
Lntybus, furnishes an illustration of a coronate, the artichoke : : = 
: and Scorzonera of a plumose sessile, the goatsbeard, gl ea 
_ Fic. 237. — Plumose sessile Fic. 238.—Pappusof Carlina Fic. 239.—Fruit, 7% 
pappus of 77vagopfogon. . vulgaris, the feathery rays of the tansy, Tan- 
united below into several acetum vulgare, 
' bundles andcoherent at the surmounted by the 
base into a ring. coronate pappus, 2. 
pogon, of a plumose stipitate, the common thistle, Cuzcus, of 
a pilose sessile, the dandelion of a pilose stipitate pappus. 
THE COROLLA, 
The leaves of which the corolla consists, or petals, are, 
as a rule, much more delicate than- those of the calyx, and 
are usually coloured, ze white or some bright colour in 
contradistinction to green. The colour of the corolla is, 
however, of subordinate importance, and is often variable in 
the same plant. The corolla of Pu/monaria, for example, “i 
is red when it first opens, and afterwards becomes violet 
[that of Cobea scandens changes gradually from pale-green 
to purple], while that of A/zbzscus abelmoschus is white in the 
morning, pale red by mid-day, and rose-red in me evening.! 
1 [In many species also the colour varies in different iidietdae thus y 
the corolla of Campanula rotundifolia, usually blue, is occasionally = > 
white ; that of Zvreca tetralix, usually rose-coloured, is also occasionally 
white ; while.that of Polygala vulgares is indifferently white, Dies or 
rose- -coloured. —ED.]. LVR ae wl 3 | 
