ASARACEAE 1279 
ORDER ARISTOLOCHIALES — AnisrOLOCHIAL ORDER 
Herbs, shrubs, or vines. Leaves alternate: blades mostly eordate or 
hastate. Flowers perfect, often conspicuous. Hypanthium mostly adnate 
to the ovary. Calyx regular or very irregular. Corolla wanting or rudi- 
mentary. Androecium of as many stamens as there are calyx lobes or 
more. Gynoecium of usually 6 united earpels. Fruit a capsule 
Famity 1. ASARACEAE — BrgTHwORT FAMILY 
Perenni bn herbs, shrubs, or vines. Leaves alternate: blades sometimes 
ally 
many stamens. Gynoecium of 4-6 united earpels. Ovary m mostly in-' 
ferior. Fruit eapsular.—About 6 id um and 200 species, widely dis- 
tributed. 
Acaulescent herbs: calyx regular, persistent: capsule fles 
d E E filaments shorter than the anthers: d es distinct: leaves per- 
1 ASTYLIS. 
Ovary "inferio or: filaments longer than the anthers: styles 
nited : leaves deciduous 2. ASARUM. 
Chylescent herbs or vines: Salve irregular, deciduous: capsule 
3. ARISTOLOCHIA. 
HEXASTYLIS Raf. Acaulescent gingerous herbs. Leaves 1 every 
year: blades lustrous above.  Flower-stalk subtended by a bract. ypanthium 
terete, glabrous without epals green or purplish en dark-purple, and 
sometimes blotched within, persisten psule enveloped in the calyx and 
g 
hypanthium. Seeds flattened.—Eight species, as fol ows.—Spr. or spr.-sum.— 
The leaves are evergreen with coriaceous blades.—HEART-LEAFS. 
ponds of a broadly ovate type, varying to suborbicular or reniform, not has- 
ae and calyx of an urceolate type in anthesis. 
Hypanthium and calyx 3-4 cm. long, the lobes over 
1 cm. wide. 1. H. Shuttleworthü. 
Hypanthium tie calyx 1-2 cm. long, the lobes less 
than 1 wide. 
Calyx- MB o ver 1.5 em. wide in anthesis; lobes 
nearly or pim half as long as the tube. 2. H. virginica. 
ee less than 1.5 cm. wide in anthesis; 
lobes very short. . H. Memmingeri. 
Hypanthium and ca alyx of a ener or turbinate- 
ate type e. So ers . H. heterophylla. 
Calyx without 2. decided limb, the lobes erect or some- 
what sprea 
Hypanthium Bud calyx ovoid-urceolate, the small lobes 
erect, the tube not constricted. 
Hypanthium and calyx campanulate- ucc the 
e 
H. Ruthii. 
b 
TA di poner E of an ovate type. 6. H. catlifolia. 
B 
H. arifolia. 
Calyx with a salver-campanulate limb surmounting the 
tube. 8. H. speciosa. 
1. H. Shuttleworthii (J. Britten) pues Leaf-blades orbieular, varying to 
ovate or somewhat rhombie, 5-8 em. long, the sinus narrow: hypanthium and 
