10B8 ADDENDA. 



43a. Euphorbia Pearsoni, iV. E. Br. A herb, 1 ft. or more 

 high, possibly annual, with the main stem in the specimen seen about 

 4 in. long and 2 lin. thick, branching at the top. Branches 4-8 in. 

 long, 1-lJ lin. thick, erect from a curved basal part, terminating in a 

 lax 1-3 times forked dichotomous or trichotomous cyme, glabrous, 

 greyish. Leaves alternate on the undivided part of the branches, 

 1J-3J in. long, ^-J in. broad, linear to lanceolate or narrowly oblong, 

 those on the cyme opposite, very much shorter and mostly lanceolate, 

 all acute or obtuse, apiculate, tapering to a sessile or subsessile base, 

 entire or very minutely toothed on the margins, and some of the leaves, 

 especially the lower, with a small very spreading subulate tooth on each 

 side just above the base, glabrous on both sides, with the midrib slightly 

 prominent and rounded at the base ; stipules none. Involucre solitary, 

 sessile at the nodes or forks or at the tips of short branches of the cyme, 

 1-1 J lin. in diam., cup-like, glabrous, with 4 glands and 5 small toothed 

 lobes ; glands 1 J-| lin. in their greater diam., transversely oblong, entire, 

 apparently dark brown. Capsule oblong-trigonous, l|-2 lin. long, thinly 

 sprinkled with very minute adpressed hairs or ultimately glabrous, 

 exserted on a curved pedicel about twice as long as the involucre ; 

 styles free, J lin. long, stout, bifid, erect. Seeds IJ lin. long, dorsally 

 flattened, oblong, rugulose and longitudinally ribbed, whitish, with a 

 cap-like brown caruncle margined with white. 



Xiower Guinea. South Angola: in open forest near kilom. 1085, on the 

 Mossaniedes Hallway, Pearson, 2071 ! 



This is closely allied to E. pseudoholslii, Pax, from Somaliland, and has the 

 peculiar teeth at the base of some of the leaves, characteristic of that species, but the 

 habit of the plant is different, tlie branches divide into more evident cymes, the 

 involucre is larger and glabrous and the seeds rugulose as well as grooved and more 

 or less ribbed. 



52. Euphorbia verticillata. For the description given on p. 525 

 of this volume, substitute the two following : 



52. Euphorbia verticillata, Pax in Bull. Ilerh. Boiss. \re ser. vi. 

 740. Kootstock a tuber, producing 1 or more annual stems branching 

 into an umbel of 4-5 rays at the top, 2J-12 in. high, minutely puberu- 

 lous. Leaves alternate on the stem, a whorl of 5 at the base of the 

 umbel and a whorl of 4 (bracts) under each involucre, all sessile ; those 

 on the stem smaller than the others and the lowermost often scale-like, 

 J-1 in. long, lJ-5 lin. broad, ovate or ovate-lanceolate, acute; those of 

 the whorls J-l| in. long, 1^-5 lin. broad, lanceolate, acute or acuminate, 

 narrowed at the base, with revolute margins, distinctly penniveined, 

 with numerous veins on each side of the midrib, glabrous on both sides. 

 Rays of the umbel simple or once divided into 1-3 smaller rays, minutely 

 puberulous. Involucre solitary, terminal, closely sessile, 2 J lin. in diam., 

 cup-shaped, minutely puberulous, with 6 glands and 5 transversely 

 oblong minutely toothed lobes ; glands 1-1 J lin. in their greater diam., 

 rather narrowly transverse-oblong, entire, with the inner margin raised 

 or rim-like. Ovary ovoid, tapering into the styles, shortly exserted 

 from the involucre, minutely and densely puberulous, erect ; styles 



