232, EUPHOliBlAcE.E (Blown). [Eaphorhia. 



Branches distinctly angular wlien dried, 

 with solitary involucres or small cymes 

 up to 4 lin. in diam. racemosely 

 scattered along them (59) aspericaulis. 



Branches smooth (often wrinkled when dried, but A 



without tubercles or other asperities as seen - ' _ " 



under a lens), glabrous ; leaves and bracts 

 rudimentary : 

 Involucres puberulous all over outside, solitary 

 and terminal or in small terminal and 

 lateral cymes J-^ in. in diam. : 

 Rudimentary leaves lanceolate or elliptic, 



acute or obtuse, apiculate ... ... (43) cibdela. 



Kudinicntary leaves spathulate, subtruncato 



or broadly rounded at the apex (02) macella. 



Involucres glabrous outside or in 45. E, Rvdoljii, 

 minutely puberuloua on the basal part, 

 glabrous above : 

 JCymes or solitary involucres terminal or 

 apparently' so ; 

 Cymes crowded into dense corymbose 

 masses : 

 Branches and branchlets of the cytues 

 (dried) 1-1;^ lin. thick ; bracts very 

 broadly subcordate-ovate, dark pur- 

 ple or dart brown ... (50) angrana. 



Branches and branchlets of the cymes 

 (dried) ^-| lin. thick ; bracts spathu- 

 late, green ... ... (49) corymbosa. 



Cymes not densely crowded into masses : 

 Bracts or leaves sessile, deltoid, deltoid- 

 ovate or deltoid-hastate, acute or 



subacute, shorter than the involucre ; 

 Plant apparently 3-9 in. high ; 



Leaves and sometimes also the bracts 

 with an angle or acute spread- 

 ing point on each side at the " 

 base: 

 Main stems or branches with 

 compact or crowded ascL-nding 

 branchlets 1 in. or less long ... (63) hastisquama. 



Main stems or branches with 



widely spreading lax branch- ' 



lets more than 1 in. long ... (40) hrachiata. 



Leaves and bracts without angles or 



spreading points at the base : 



Involucres in somewhat lax cymes 



J-1 in. in diam,, formed by^ 



the primary branches forking 



4-5 times , (47) perpera. 



Involucres in small sessile cvmes 



• or clusters \~\ in. in diam. at 



the ends of widely spreading 



branches or of their second or 



rarely third forkings, (41) chersina, 



Plant more than 9 in. high : 

 : , Primary lateral branches lJ-2 lin. 



