434 A FLORA OP MANILA 



seated on upcurved supports (retinacula) , ovoid or compressed, testa smooth 

 or rugose; albumen none; radicle next to the hilum. 



Genera 204, species about 2,000 in tropical and warm-temperate regions, 

 26 genera and about 100 species in the Philippines. 



1. Perfect stamens 2 , staminodes or much-reduced imperfect stamens often 

 present. 

 2. Herbs. 



3. Flowers in axillary clusters 1. Dicliptera 



3. Flowers in spikes. 



4. Erect, the spikes on elongated, rig:id peduncles 2. Elytraria 



4. Prostrate or spreading ;^ spikes sessile. 3. Juaticia 



2. Shrubs or undershrubs. 



3. Corolla narprowly funnel-shaped....... 4. Barleria 



3. Corolla tubular, salver-shaped, or 2-lipped. 

 4. Corolla salver-shaped, subequally 6-Iobed or obscurely 2-lipped. 



5. Shrubs with purple or variegated leaves; corolla lobes with 



scatered, small, purplish spots 6. Odontonema 



'5. Undershrubs with green leaves; lower corolla-lobe with a large 



purple spot 6. PseuderanthemwM 



4. Corolla distinctly 2-lipped. 



6. One anther-cell .below the other, tailed at the base.... 3. Juatieia 

 5. One anther-cell, somewhat below the other, rounded or acute 



at the base, the upper lip of the corolla small and twisted. 



7. Rhinacanthna 



5. Anther cells at an equal or nearly equal height, not tailed; leaves 



brownish-purple or variegated _.,. 8. Graptophyllum 



1. Perfect stamens 4, in t wo pa irs. 

 2. Seeds not supported by curved bodies. 

 3. Vines or shrubs with showy, medium or large flowers; seeds 2 or 4. 



9. Thunbergia 

 3. A small erect herb with small flowers and numerous seeds. 



10. Staurogyne 

 2. Seeds supported on curved, hard bodies (retinacula). 

 3. Upper corolla-lip obsolete, the lower one broad; shrubs with spiny 



leaves 11. Acanthxa 



8. Corolla 2-Iipped or 6-lobed; herbs with spineless leaves. 

 4. Capsule 2- or 4-seeded; flowers in dense, spike-like heads. 



12. Lepidagathia 

 4. Capsule with more than 4 seeds. 



6. Flowers axillary, solitary or fascicled. 



6. Capsule oblong to linear, seed-bearing throughout; flowers 



fascicled 13. Hygrophila 



6. Capsule clavate, base narrowed, seed-bearing above only; 



flowers solitary. 14. Rueliia 



6. Flowers in terminal spikes. 

 6. Capsules linear to linear-oblong; leaves usually toothed or 



crenate ; 15. Jlemigraphia 



6. Capsules ovate to orbicular; the bracts large, foliaceous, 



spreading, arranged in 2 ranks; leaves entire.... 16. Blechum 



1. DICLIPTERA Jussieu 



Erect branched herbs. Leaves ovate, entire. Flowers in axillary clus- 

 ters, the bracts opposite, unequal, larger than the calyx. Flowers sessile. 



