197 
Calvinia Divisions, extending north = Great Namaqualand, 
tropical 8.W. Africa and Griqualand Wes 
In Index Kewensis, Suppl. 1, p. 200 “his species is referred 
to as “ Heliotropium tuberculatum, Guerke = Messerschmiedtia 
tuberculata Cham.” The entry should read “ H. tuberculosum, 
uerke = Tournefortia tuberculosa, Cham.” 
40. Polygonum plebeium, Ff. Br. Prodr. p. 420 (1810). 
P. herniarioides, Del. Resembling forms of P. aviculare, Linn. 
in habit, and easily confused with it in the flowering state; 
equally polymorphic. Stem trailing; internodes short ; minutely 
scaberulous (sometimes smooth ?); leaves linear- oblong, 4-10 mm. 
long, minutely scurfy or glandular, especially below; midrib 
prominent, lateral nerves obscure; stipules lacerate ; nerve 
mostly 1 (rarely 2 or more or 0); fruit rhomboid, blackish- 
brown, smooth, shining. 
TROPICAL APRICA. Transvaal; north through 8. Rhodesia 
(Gwelo), Abyssinia, Egypt and Tropica sia. 
Hooker (Fl. Brit. Ind. v. p. 28; 1886) “ictalisios “8. Africa ’ 
in the range of distribution of this species, probably on the 
strength of Drége’s specimen from the Victoria West Div. 
(“ Nieuwe Veld ”’) which Drége named P. herniarioides. 2 
plant has been referred to P. aviculare, Linn., but though the 
specimen is immature I am inclined to the opinion that Drége 
was right in his determination; the leaves have the peculiar 
seurfy cuticle of P. plebeiwm ; though the nerves of the ochreae 
are more numerous than in typical plebeiwm, the variety poly- 
neura, Hook. f. has equally numerous nerves, and further agrees 
in the long, narrow and revolute leaves 
Var. micranthemum, Hook. f. Fl. Brit. Ind. v. p. 29 (1886). 
Small, slender, lax and ‘sonietlin’ flaccid; leaves 6-8 mm. long, 
linear or linear-oblong, narrowed to the base, obtuse to acute, 
flat; flowers small; pedicel 1-2 mm. long, 2 mm. broad; sepals 
narrow, green with white margins; fruit about 1 mm. ‘long or 
less, blackish-brown. 
Sovurn Arrica. ‘Transvaal: Waterberg Dist., Tamboties 
pata 960 m., egereh on wettish alluvial ground, overflowed 
during rains, Dec. 9, Burtt-Davy 18,309. Agrees well with 
Wallich’s 1691/5 ek the banks of the Irrawaddi) and 1691/4 
(from Kumaon). 
