rubiacejB. 99 



Synopsis of the Geueru. 



1. fia'lluiii. Leaves in whorls. Slender weak herba with square 



stems. Calyx-teeth inconspicuous. Corolla 4-parted, wheel- 

 shaped. Styles 2. Fruit twin, separating into two 1-seeded 

 carpels. 



2. Slierard'la. Leaves in whorls. Stems square, slender, procum- 



bent. Corolla funnel-form, l-o-lobad. Calyx-lobes lanceolate. 

 Flowers blue or pinkish, with a gamophyllous involucre. 



3. Ceplinlan'tbns. Leaves opposite. Shrubs with the flowers in a 



globular pedunded head. Lobes of calyx and corolla each i. 

 Style very slender, much protruded. Stigma capitate. 



4. Mitchcl'la. Leaves opposite. Shining trailing evergreen herbs, 



with flowers in pairs, the ovaries united. Lobes of calyx and 

 corolla each i, the corolla bearded inside. Style 1. Stigmas i. 

 Fruit a red 2-eyed berry. 



4. Housto'nia. Leaves opposite. Low and slender erect herbs, wUh 

 the flowers in small terminal clusters. Lobes of calyx and 

 corolla each 4. Style 1. Stigmas 2. 



1. eA'LIVM, L. Bedstraw. Cleavers. 



1- G. Apari'ne, L. (Cleavers. Goose-grass.) Leaves 

 about 8 in a whorl, lanceolate, rough-margined. Peduncles 

 1-2-flowered, axillary. Fruit covered with hooked prickles. 

 Low grounds. 



2. G. triflo'rum, Michx. (Sweet-scented Bedstraw.) 

 Leaves chiefly 6 in a whorl, elliptical-lanceolate, bristle- 

 pointed. Peduncles 3-flowered, terminating the branches. 

 Fruit covered with hooked prickles. — Woods. 



3. G. pilo'sum. Ait. Leaves in whorls of 4, hairy, oval. 

 Peduncles twice- or thrice-forked. — Southwestern Ontario. 



4. G. laneeola'tum, Torr. (Wild Liquorice.) Leaves 

 all in whorls of Jt each, lanceolate, tapering at the apex, more 

 or less 3-nerved. Peduncles mostly once-forked. Flowers 

 few or several, remote. Fruit covered with hooked prickles. 



5. G. eirese'zans, Michx., is similar to No. 4, but the 

 leaves are obtvse instead of tapering. — Woods. 



