BORAGINACE^J. 
204 
\Cynoglossum. 
oblong, scarcely J in. long. Rochelia borbonica, Roem. and Schult. iv. 
118 ; Bojer, Hort. JMaur. 232. 
Mauritius, in damp and shaded places, frequent. Also Bourbon. 
2. C. borbonicum, Bory ; DC. Prod. x. 151. Annual or biennial, 
more or less branched, the stems densely clothed with short soft grey 
hairs. Leaves linear, acute, J in. broad, the lower narrowed into a 
petiole. Racemes very lax, simple or forked, 1-4 in. long ; pedicels at 
most as long as the calyx. Sepals oblong-lanceolate, T x ¥ in. long, pilose. 
Corolla twice as long as the calyx. Nucules ovoid, densely prickly, 
i— £ in. long. Rochelia strigosa, Roem . and Schult. Syst. Veg. iv. 782. 
Mauritius, in grassy places. Also Bourbon. 
6. HELIOTROPIUM, Linn. 
Calyx 5-partite ; teeth lanceolate. Corolla hypocrateriform, the tube 
constricted at the throat ; lobes 5, short, spreading, obtuse. Anthers 
oblong, sessile in the lower part of the corolla-tube. Ovary 4-celled ; 
style very short; stigma capitate. Fruit of four dry nucules. — 
Herbs or shrubs, with rough alternate leaves and cymose inflores- 
cence. Distrib. Cosmopolitan, Species 100 or more. 
1. H. indicum, Linn. Sp. 187. A coarse erect annual, with stems 
densely clothed with bristly hairs. Leaves alternate, distinctly 
petioled, large, ovate, acute, crenate. Flowers in simple or geminate 
stalked secund scorpioid spikes 3-6 in. long. Sepals in. long, rather 
unequal. Corolla purple, 3 times as long as the calyx ; tube penta- 
gonal, narrowed from the bottom to the top. Nucules twice as long 
as the calyx, in two divaricating pairs, deeply plicate, with a foliaceous 
tip. Bot. Mag. t. 1837. Heliophytum indicum, DC. Prod. ix. 556. 
Tiaridium indicum, Lehm. 
Mauritius, Rodriguez, and Seychelles, a common weed. Everywhere in the 
tropics. Herbe queue de rats. Herbe aux papillons. 
Order LXY. CONVOLVULACEjE . 
Flowers regular, hermaphrodite, pentamerous. Calyx inferior, the 5 
sepals distinct, usually broad and imbricated, accrescent iu fruit. 
Corolla funnel-shaped or hypocrateriform, contorted in aestivation, 
with 5 very short lobes. Stamens 5, epipetalous, opposite the 
sepals ; anthers sagittate, 2-celled, basifixed, slit down the sides. 
Ovary usually simple, 1-4 celled ; style filiform ; stigmas 2 ; ovules 
1-2 in a cell. Fruit usually a 4-valved capsule. Seeds albuminous. 
— Twining herbs or shrubs, with alternate exstipulate petioled mostly 
cordate or hastate leaves and showy flowers on axillary peduncles 
solitary or corymbose. Distrib. Round the world, mostly in the 
warmer regions. Species 800. 
