268 
PENTANDRIA. 
shaped ; (with five nectariferous pores at the base of each 
segment. E.) 
GENTIA'NA. Caps, one-celled; two-valved : Bloss. tubular at 
the base, without nectariferous pores : Receptacles of the 
seeds two. 
[Xuscuta.] 
(3) Flowers of Jive petals , beneath 
QStaphylea pinnata.]] 
(4) Flowers of five petals , mostly of two seeds. 
Umbelliferous. (Umbellate.)* 
A. Involucrum general and partial. 
ERYNGIUM. Floivers forming a head : Recept . chaffy: (Seeds 
bristly. E.) 
HYDROCO'TYLE. Flowers in a simple umbel ; fertile : Seeds 
compressed : (Pet. entire. E.) 
SANIC'ULA. Flowers in a capitate umbel ; central ones abor¬ 
tive : Seeds prickly. 
HERACLETTM. Flowers radiate ; some barren: Invol. de¬ 
ciduous : Seeds membranous, (with three obtuse ribs on 
the back. E.) 
CENAN'THE. Flowers radiate; outer ones barren : Invol . 
simple : Seeds with a suberose coat, crowned, sessile. 
CAU'CALIS. Flowers radiate; central ones barren: Invol. 
simple : (Seeds with four rows of hooked prickles, the 
instertices rough. E.) 
(TORPLIS. Invol. sometimes obsolete. Flowers equal. 
Fruit ovate, ribbed, every where clothed with bristles. 
Grev. E.) 
DAU'CUS. Flowers radiate ; central ones barren : Invol. pin- 
natifid : Seed with muricated ribs and bristles between. 
TORDYI/IUM. Flowers radiate ; all fertile: Invol . simple 
Seeds scolloped at the edge. 
FEUCED'ANUM. Flowers uniform; central ones barren: 
Invol. simple : Seeds depressed ; striated, bordered. 
* (The different umbelliferous plants afford shelter and nourishment to various insects, 
especially to Papilio Machaon , the superb swallow-tailed butterfly, whose larva feeds on 
them ; Mordella abdominalis, (Edemera Podagrarice 3 Molorchus dimidiates, and Leptura 
meridiana. E.) 
