3^4 



A TEXT-BOOK OF BOTANY. 



Fig. 224. Lobelia inflata: A. upper portion of shoot showing the dentate-denticulate 

 leaves, the bracted racemes with flowers and inflated capsules, the latter developing soon 

 after fertilization; B, flower showing linear calyx teeth and 2-lipped corolla, the upper 

 lip with 2 rather erect lobes and the lower lip spreading and 3-cleft; C, longitudinal section 

 of flower showing the ovary with ovules (o), style (s), hairy bifid stigma (t),- united stamens 

 (a), corolla (p) and calyx (c) , D, longitudinal section of stamen showing the hairy summit. 



Scutellaria pilosa: E, branch showing crenate leaves and helmet-shaped capsular 

 fruits; F, capsule after dehiscence showing nutlets (n). G, section of flower of Scutellaria 

 lateriflora showing calyx (c) with crest on one side, 2-lipped corolla (p), the didynamous 

 stamens (s), and 4-locular ovary (n). 



Spearmint (Mentha spicata): H. showing flowers in slender interrupted spikes; J, 

 flower with bell-shaped calyx, tubular corolla and 2-lobed stigma; K, ellipsoidal poller 

 grains. 



