18 II. DILLEXIACE.^. [Hibherlla 



) 



Leaves narrow linear^ aljout 1 in. long. 



Softly hairy 6. //. Miielleri, 



Glabrows. liCaves wliite imderucatli , . 5, iT. anguslifoUa. 



{TIemutemma ? LescJienauUii, DC, Syst. X^^. i, 414, is a species of Bei/erla.) 



Sect. IT. Hemiplenrandra. — Perfect stamens all on one side of the ca7'peh ; sfa- 

 vilnodia 2 or 3 07i each side of them, or inorc numerous and continued round ike carpels^ 

 very rarely any outside the perfect stamens. — All western species. 



Peduncles hearing 2 or more sessile flowers in a one-sided spike. 



Leaves glabrous. Staminodia completing the ring of stamens . 9. H. spcata. 



Leaves or sepals hirsute. Stauiiuodia few ».♦.,.. 10. H. polystachya, ^ 

 Peduncles 1-flowered. 



Leaves oblong or linear, very obtuse, stellate-tomentosc or hoary 



underneath. 

 Leaves mostly above 1 in., the margins scarcely recurved. 



Ovules 4 ... * 11. H, furfuracea. 



Leaves mostly i in., the margins much revolute. Ovules 2 . 12. -ff. hypericoides. 



Leaves rigid, glabrous. 



Leaves short, convex, rcflexed 13. iT. microphylla. 



Leaves narrow-linear, the margins very closely revolute. 



Leaves 2 to 4 lines, whitish, obtuse or recurved at the end 14, H, recurvifoUa, 



Leaves mostly i in., straight, obtuse 15. IT. lineata. 



Leaves very pointed ,-...•• 16. H, acerosa. 



Flowers sessile. 



Plant glabrous or nearly so. Leaves mostly i in. Sepals shiuing 17. //. aureal 

 Leaves very obtuse, 2 to 3 lines long, hoary. Sepals pubesceut 18. H. crassifoUa. 



Sect, ITI. PleTirandra. — Siame^is all on one side of the carpels withoid any stonil' 

 nodla. Peduncle 1 flowered or none, — Species all southern and eastern except IL pcdun- 

 culata and H. mucronata^ which are western. 



F 



Leaves obtuse or with a callous point, oblong or linear. 

 Flowers sessile. 



Leaves with flat or slightly recurved margins, glabrous or 

 slightly hairy. 



Calyx glabrous *...•. 19. .ff. nitida. 



Calyx verj' villous . 20. -^. hracteata. 



Leaves with their margins much revolute. 



Leaves softly pubescent or villous, oblong or linear. 



Sepals 3 to 5 lines. Floral leaves usually as long or 



longer. Petals broadly obcordatc 21. H. sericeu. 



Sepals 2 lines. Floral leaves smalL Petals narrow . 22. H, hirsnta. 

 Leaves narrow-linear, rigid, glabrous or scab-ous , . . 23, JT", slricta. 

 Flowers pedunculate. 



Ovules 4 or more in each carpel. 



Leaves obovate, oblong, or shortly linear 25. -ff. Billardieri. 



Leaves narrow-linear. 



Stems virgate, or with numerous ascending branches, or 

 divaricately blanched. Calyx glabrous, stellate-tomca- 

 tose, or, if hirsute, pedicels very short ..... 23. iTl stricta. 



Stems prostrate. Calyx hii-sute, on rather long pedicels 24. E. humifusa. 

 Ovules 2. Peduncles slcuder. ■ . . 



Leaves obovate, oblong, or shortly linear. Peduncles usually 



slioi-t 2^. E, Billardieri. 



Leaves narrow-linear. Pedimcles slender, i to 1 inch. 



Stems diffuse , 1 20. E. yracilipes. 



Leaves narrow-linear, very acute, mostly pungent. 



Flowers on slender peduncles. Stems procumbent or diffuse. 



Leaves much revolute or nearly terete, slightly pointed . . 26. H". yracilipes. 





