413 pulpy, terete, 4-6 lines thick; petals stiff 



13, licctylopsis 



Sten evident between some of the leaf-she? ths, erect, 

 4-5 inches Ion:?', v:ith more then two elternete f-nd 

 OTOsite lepves spaced along it; petals not stiff 



14, --i-spazoxaa 



28. risnts with distinct, erect, decumbent or prostrtte 



stems or flowering branches 23 



Plants quite stemless; rootstock tuberous, leafless 

 pert of the yecr; leaves terete; flov/ers subsexsile 

 or very shortly pedicillate 31, ihyllobolus 



N» E» Bpov/n 

 (To be continued.) 



Gard^ Chron. HI. 7SJ 433. 1925, 

 (Continued from page 413.) 



433 23. Stems or flowering-branches erect, stout; leaves wither- 



ing and persisting as sharp spines, or (on dried 

 specimens) their bases persisting as hard fragments; 

 fiov'ers in terminal cymes; calyx-lobes- Vvith spine- 

 like tir>s or acuminate 15, Amoebophyllum 



Stems decumbent or prostrate from a tuberous or fleshy 

 rootstock, not stout; leaves sometimes withering into 

 spines; f-lowers terminal and solitary or becoming 

 lateral and scattered -along the branches opposite the 

 leaves 16, Sphalmanthus 



24. leaves small and united at the base ino a short sheath 



beerin,?- a ring of deflexed hairs or cilia, v/ith the 

 free part subulate, subterete or deltoid, very dv.arf 

 busy plants, densely/ branches 36, Trichocyclus 



Leaves sessile, '-ithout a rin^?' of defexed hairs or 



cilia at their base 25 



25. Bushes or bushily branches rlants, erect or in a. fev; 



species decumbent; internodes evident on all parts; 

 leaves terete, semiterete or trigonous, withering and 

 oft^n .deciduous and lec-ving naked stems 26 



"ot bushily branched plants; flov/ering-branches decumbent 

 or procumbent, or the v^hole plant prostrate; internodes 

 of the main stem often quite absent; leaves linear- 

 Ipnceolate or flattish, or in some species subterete 



18, treni'^ 



25. Corolla small, usually 3-5 (rapel?/ up to 9) lines in 



diam.eter; seeds very small, *--| (rarely 2/3) line in 

 diamter, nearly smooth or minutely granulate 



35, ^silocaulon 



CorollP showy, 9-20' lines in diam.eter; seeds '* to nearly 



