XLIV OUTLINES OF BOTANY. 
last ei a pi or the axis of inflorescence is often distinguished under 
ae name of 7 
9 A rel pa radical Peduncle is a leafless peduncle proceeding from 
the stock, or from near the base of the stem, or apparently from the 
root itse 
70. A Pedicel i is the last branch of an inflorescence, supporting a single 
flower 
71, The br anches ot inflorescences may be like those of stems, opposite 
alternate, etc. (32, 33), but very often their arrangement is different from 
that of the e leafy branches of the same plant. 
. Inflorescen 
centrifugal, ae ie terminal flower opens first, and those on the 
lateral branches are 2g agra developed. 
centripetal, when the t flowers open first, and the main stem 
continues to elongate, een ets fresh flowers. 
7 
ne plant, for it often happens that the main tenis ches of an 
inflorescence are centripetal , whilst the flowers on the lateral branches 
re centrifugal; or vice versa. 
cence ji 
a Spike, or Seg when the flowers are sessile along a simple undi- 
vided axis or 
aoe or racen emose, haben the flowers are borne on pedicels along 
a — undivided axis or 
‘anicle, or paniculae, pene the axis is divided into branches bear- 
ing raed or more 
a Head, or pereha ses several sessile or nearly sessile flowers ae 
elected into a —— ct head-like neta The short, fl 
nical axis on which the flowers are seated, is called the Receptacle, a 
erm also used for. the ee ca a nae resi (135), The pa compact 
Howerheas of Compositae 
n Uj 
mbel, or umbellate, wie epinen branche 8 or peilisols appear to 
pr pint the same point and are n 
m 
not sessile. An umbel is said to be sim mple, w 
or rays bears a single flower; compound , when avis ray bears a partia 
umbel or umbellule. 
a Corymb, or corymbose, when rs branches and pedicels, st 
starting from different points, all attain the same lev el, the loy es 
pane longer than the poairees “it is a flat- -topped or fastigiate 
a Cyme, o cymose, when ee and centrifi Tt isa ese 
gal —* Pol? is often corymbose. The cen ve 
ower opens The 
ra 8 ively verloged are usually forked or pale 
(dichotomous or trichotomous), but sometimes after the first forking the 
o longer divided, b roduce a succession of cels o 
their upper side forming apparently unilateral centri 1 es; whereas, 
if attentively examined, it will be d that each pedicel first 
— but —— tieral by the development of one outer branch only, 
ediately under the pedicel. Such branches when in bud, are generally 
rolled back at oa top, like the tail of a scorpion, and are thence called 
