Euphorbia.] cxxii. euphorbiace^ (hrown). 478 



Herb; hranc/ies slender, repeatedly forked, their 

 tips and o very short spur m each fork much 

 thickened and knoh- or tuhercle-Uke {not so in 

 any other species), corruffated toith leaf-scars 

 and hearing a fvft of 4-6 linear leaves and 



1-3 involvco-es 35. J?, hedyoioidex. 



HerhaceoTS annuals or perennials, or, if woody 

 at the lower part, alioays xoith herbaceous 

 Jlowerinff branches; leaves ivell developed, always 

 jyresenf. 

 *Animftl, prostrate or decumbent, flowering- 

 leaves opposite, with a basal patch or 

 half the leaf on one side of the niidrib 



white, not so in any other species . . \, E. phyllorlada. 



**Annual or perennial; stems prostrate or in a 

 few species erect, usually less than 1 lin. 

 thick; leaves opposite, petiolate, often 

 unequal at the base, usually stipulate; 

 involucre-glands 4 (rarely 5), small or 

 minute, entire, with or without a petal- 

 like entire or lobed or minute rim-like 

 appendage, never 2-horned or with other 

 processes. 

 Involucres several (more than 3) or many 

 together in i)edunculate heads, clusters 

 or cymes; leaves 2-9 lin. broad, only 

 occasionally linear. 

 Young parts of stem and bi-anches con- 

 spicuously i)ilose with spreading yel- 

 lowish hairs ; flowci's in globose 

 heads . . . . . . i. i"". hirfa. 



\ oung parts of stem and branches glabrous 

 or puberulous, never with conspicuous 

 .ipreading hairs; flowers in small 

 cymes or clusters. 

 Cymes with 1 pair of leaves at the 

 base, sometimes minute or absent ; 



involucres usually many , . . .">. i". /nutericiJoHc. 



(/'ymes with more than 1 ]mir of leaves; 



involu<-res usually few ... 6. E. (ilancophylla. 

 Involucres only ,1-3 together if on slender 

 peduncle-like axillary branchlets with 

 1-2 pairs of leaves, but mostly solitary 

 or clustered and axillary or in the forks 

 of the branches or terminal or on short 

 axillary leafy branchlets. 

 Leaves 5-12 times as long as broad, linear 

 or linear-oblong; branches glabrous 

 all round (except in 32, E. lupatensis, 

 and sometimes in 9, E. zambesiand). 

 Gland-appendages very inconspicuous 

 or none. 

 Plant rather densely leafy; seeds 

 rather deeply rugose or pitted- 

 rugose 17. -fe'. polyrticmoide^. 



