580 DIONAEACEAE 
Famity 2. DIONAEACEAE—Venvus’-riytrap FAMILY 
Perennial glabrous herbs. Leaves conduplicate and inflexed in the 
bud, the blade folding lengthwise. Flowers corymbose. Calyx of 5 per- 
sistent sepals. Corolla of 5 petals. Androecium of 10-20 stamens united 
a ase. Gynoecium of 5 united carpels. Fruit an irregularly opening 
capsule. Seed shining.—One genus and one species. 
DIONAEA Ellis. Erect herbs. Leaves basal, arching-decumbent. 
Petioles winged. Petals white, marcescent. Capsule erect. 
1. D. muscipula Ellis. Leaves 4-15 cm. long: petioles spatulate or obovate, 
naked: blades suborbicular to reniform, long-ciliate: scapes 1-4 dm. tall: 
— 7-9 mm. long: petals cuneate, 11-13 ey 
mm. long, truncate and erose at the a apex: 
capsule ovoid, 3-4 long.— (FLYTRAP. 
VENUS ’-FLYTRAP P.) T an nde bogs, Pod 
and low pi Pars usually in acid soil, 
Coastal Pla 
E S. C. and N. 6 pr. 
The o unus i a of the flytrap are 
the three irritable cilia on the face of each 
as lobe which transmit s stimulus that 
uses the paired lobes to snap shut on an 
M. and the eyelash-like cilia of the lobes Jj: 
which (os together like the fingers when j-° 
one's hands are folded, thus mere sure 
the un is n held. 
. Faminy 3. SARRACENIACEAE-—PrrCHER-PLANT FAMILY 
Perennial bog herbs, living to some extent on decaying insects and 
leaves which have fallen into the tubular or pitcher-like leaves. Flowers 
perfect, nodding. Calyx of 5 persistent sepals, accompanied by 3 bracts. 
Corolla of 5 deciduous petals. Androecium of numerous stamens. Gynoe- 
ium of 5 united carpels. Fruit a 5-valved eapsule.—Three genera and 10 
species, all Ameriean. 
1. SARRACENIA [Tourn.] L. Acaulescent herbs with horizontal root- 
stoeks. ibn basal, ereet or decumbent, hollow, with a ventral ridge or wing 
and a terminal expansion or hood, green, yellow, or purple, or variegated; 
d i pitcher-like or trumpet-like, sometimes present. Flowers on grees 
hollow scapes. Stigmas hooked, under the angles of the umbrella-like ex- 
pansion of the style.—A bout 8 species, natives of eastern North America.— 
EVE’S-CUPS. FROG-BONNETS. BoG-BUGLES. PITCHER-PLANTS. TRUMPETS.— 
Spr.-sum.—Natural hybrids observed and described are cited under the species 
following. There are many artificial hybrids. The morphology of the leaf is 
such that insects are entrapped and digested, thus furnishing material which 
the plant uses for nourishment. Some species have phyllodia in winter. 
Leaves (pitchers) decumbent, relatively short. I. PURPUREAE, 
Leav E: d ue A uei elon ate 
open, ast not closely covered by the hood: 
Betals yellow ics m-eolored or re II. FLAVAE. 
Orifice closely. ‘covered by the arched cucullate hood: 
petals clear-yellow III. MINORES. 
