ID 
pRnsrcipiA 
yet seeds are said to be naked, when not enclosed in any 
sort of pericarpium, as in the class and order didynamiu 
gymnospermia. 
5th. The Coronula* (a little crown) which is either a 
little sort of calyx, (caliculous) adhering to the top of the 
seed, like a little crown, and assisting to disperse it by flying, 
as in scahiosa, knautia, &c. where the little calyx of the flo¬ 
ret becomes the crown of the seed. Or the coronula is a 
down (pappus) which is either feathery, as in Valeriana, 
leontodon, gnaphalium, &c. or it is hairy, as in tussilago , 
senecio, hieraeium, &c.; it is also either sitting, (sessilis) that 
is, attached close to the seed, as in hieraeium, &c. or foot- 
stalked (stipitatus, from stipes) by a thread, elevating and 
connecting the crown or tuft with the seed, as in lactuca, 
crepis, &c. Some seeds are also furnished w ith a wing, a tail, 
a hook, an awn, &c. all coming under the term coronula, and 
tending either to disperse or fix the several seeds to which 
they belong. 
6th. Nux, (a nut) which is a seed enclosed in an hard 
woody substance, called the shell , which is one-celled, two-cel¬ 
led, &c. and the enclosed seed is called (nucleus) the kernel. 
The seed of a moss , not coming under the above description, 
Lin nans calls Prop a go, (a slip or shoot) which hath neither 
coat nor cotyledon, but consists only of a naked plumula, 
where the rostellum is inserted into the calyx of the plant. 
VII. The RECEPTACULUM (receptacle) is the base 
which receives, supports, and connects the other parts of the 
* The dmm with which many seeds are furnished, as in goat's-leard, dandelion , 
thistle , &c. hath generally been thought intended to disperse them; yet as the 
down frequently breaks off, and is seen flying alone ; it hath been imagined by 
some, that the down is only intended as a defence of the seed till arrived at matu¬ 
rity. Some seeds are also furnished with an elastic force, in order to disperse them, 
which is either in the calvx as in oats, and some others ; in the pappus, as in cen¬ 
taur ea-crupini; or in the capsule, as in justicia, geranium, fraxinella, spurting 
cucumber , hut a, &c. Other plants of the burr kind, as burdock, hairiff, &c. are 
furnished with little hooks to stick to the hair of animals, by which means the 
seeds are dispersed. Other seeds, especially those whose pericarpium is a berry, a£ 
also the nutmeg, and other nuts, are dispersed by birds and other unimals. 
See note to momotdica elatermm . 
