ONAGKACE^. (eVENING-PRIMROSE FAMILY.) 137 



3. TERMINALIA, L. 



Flowers in spikes, often polyi,^unous. Limb of the calyx deciduous, bell- 

 shaped, 5-cIcft, with the lobes acute. Petals none. Stamens 10, in 2 rows, 

 longer than the calyx. Ovary 2-3ovuled. Style filiform. Drupe dry and 

 indchiscent, 1-sccded. Seed almond-like. Cotyledons spirally convolute. — 

 Trees or shrubs, with mostly alternate leaves, which arc crowded at the summit 

 of the branches. 



1 . T. Catappa, L. Leaves short-petioled, softly pubescent when young, 

 at length smoothish, obovate, wedge-shaped but truncated or slightly cordate at 

 the base, with a depressed gland on each side of the midrib near the base ; spikes 

 very slender, shorter than the leaves, the upper flowers sterile ; drupe ovate, acute, 

 compressed, with the margins somewhat winged. — South Florida. — A large ti'ce. 

 Leaves 4' -8' long. Flowers minute, pale green. 



Order 55. ONAGRACEiE. (Evening-Primrose Family.) 



Calyx adherent to the ovary, and often produced into a tube beyond it, 

 2-6-lobed, valvatc in the bud. Petals as many as the lobes of the calyx, 

 inserted into its throat, convolute in the bud, sometimes wanting. Stamens 

 as many or twice as many, inserted with the petals. Ovary 2 - 4-celled. 

 Placenta central. Style solitary : stigma capitate or 2 - 4-lobed. Cap- 

 sule loculicidally dehiscent or indeliiscent. Seeds anatropous, with little 

 or no albumen. — Chiefly herbs. 



Suborder I. ONAGRACE^. Styles slender. Fruit 4-valved 

 (indehiscent in Gaura). Seeds attached to a central placenta, "without 

 albumen. 



* Calyx-tube produced beyond the ovary. 



1. GAURA. Capsule nut-like, indehiscent, l-4-8ceded. 



2. (ENOTHERA. Capsule 4-valved, many-seeded. 



* * Calyx-tube not produced beyond the ovary. 



3. EPILOBIUM. Stamens 8. Petals 4. Seeds comose. 



4. JUSSLEA. Stamens 8-12. Petals 4 -6. Capsule long. Seeds naked. 



5. LUDWTGIA. Stamens 4. Petals 4, or none. Capsule short, many-seeded. 



6. CIRC.SA. Stamens 2. Capsule obovate, 1-2-seeded. 



Suborder II. HALORAGEtE. Styles very short or none. Fruit 

 indeliiscent. Seeds suspended, solitary in each cell. Albumen thin. — 

 Flowers minute, axillary. 



7. PROSERPINACA. Flowers perfect. Stamens 3. Capsule 3-angled. 



8. MYRIOPHYLLUM. Flowers monoecious. Stamens 4 -8. Capsule 4-angled. 



1. GAURA, L. 



Calyx-tube much produced beyond the ovary, the limb 3 - 4-lobed, reflexed, 

 deciduous. Petals 3-4, clawed, unequal or turned to the upper side. Stamens 

 12* 



