KEY TO THE NATURAL ORDERS. 
xlv 
celled ; placentation axile. Fruit capsular. — Herbs, with alternate entire leaves 
(page 123). 
XLYIII. Portulacese. Flowers hermaphrodite. Sepals 2. Stamens definite 
or indefinite. Ovary 1-cellcd ; placentation free-central. Fruit capsular. — Herbs, 
with fleshy entire leaves (page 125). 
XLIX. Araliacese. Flowers hermaphrodite or polygamous. Stamens as many 
as petals. Ovary many-celled ; placentation axile. Fruit baccate. — Shrubs, with 
alternate leaves (page 126). 
L. Begoniacese. Flowers unisexual. Stamens indefinite. Ovary usually 3- 
celled, with axile placentation. Fruit capsular. — Succulent shrubs, with alternate 
leaves (page 128). 
LI. Cucurbitacese. Flowers unisexual. Stamens usually 3. Ovary 3-celled. 
Fruit fleshy. — Herbs, with tendrils and alternate leaves (page 129). 
LII. Umbelliferse. Flowers hermaphrodite or polygamous. Stamens 5. 
Ovary 2-celled; ovules solitary. Fruit-carpels in dehiscent. — Herbs, with alternate 
divided leaves (page 131). 
LIII. Cactacese. Flowers hermaphrodite. Stamens indefinite. Ovary 1- 
celled ; placentas parietal. Fruit a berry. — Fleshy leafless shrubs (page 133). 
LIY. Iioranthacese. Flowers hermaphrodite or unisexual. Stamens definite. 
Ovary 1 -celled ; ovule solitary. Fruit baccate. — Parasitic shrubs, leafy or leafless 
(page 134). 
Series III. GAMOPETALffioiMONOPETALffi. Flowers furnished with 
both a calyx and corolla, the petals of the latter more or less united to one another. 
* Ovary inferior. 
LY. Rubiacese. Flowers regular in all the Mauritian genera. Stamens as 
many as petals, free. Ovary 2- or many-celled ; ovules 1 or many in a cell. Fruit 
various. — Trees, shrubs or herbs, with opposite entire stipulate leaves (page 136). 
LVI. Compositse. Flowers crowded into a head which is surrounded by an 
involucre, all tubular, all ligulate or both kinds mixed. Stamens as many as petals, 
syngenesious. Ovary 2-celled ; ovules solitary. Fruit an achene, usually crowned 
with a pappus. — Herbs or shrubs, with alternate or opposite exstipulate leaves 
(page 160). 
LYII. Goodeniacese. Flowers irregular. Stamens 5. Ovary 1-4-celled ; 
stigma surrounded by a cup. Fruit dry or fleshy. — Herbs or shrubs, with alternate 
exstipulate leaves (page 182). 
LVIII. Campanulacese. Flowers regular or irregular. Stamens 5. Ovary 
2-5-celled; placentation axile; stigma not surrounded by a cup. Fruit dryvor 
fleshy. — Herbs, with alternate exstipulate leaves (page 183). 
** Ovary superior . Corolla regular. 
* Leaves alternate. 
LIX. Ericacese. Stamens twice as many as corolla-lobes, hypogynous ; anthers 
dehiscing by terminal pores. Ovary 4-5-celled; placentation axile. Fruit cap- 
sular. — Shrubs (page 185). 
Plumb aginaceje. Stamens as many as corolla-lobes. Ovary 1-celled; ovule 1, 
with a long funiculus. Fruit dry. — Herbs or shrubs (page 187). 
LX. Plantaginacese. Stamens 4 ; anthers dehiscing longitudinally. Ovary 
