56 LXXXIV. APOCYNACEE (STAPF). | Landolphia. 
except the acutely edged midrib, pubescent. Corolla whitish; tube 
cylindric below to the middle, then much inflated and distinctly 
constricted close to the mouth, 14-1? lin. long, minutely pubescent 
without in the upper half; lobes linear-oblong, subacute, as leng as the 
tube or slightly shorter, finely pubescent without along the middle, 
mouth very narrow, very minutely pubescent. Stamens in the upper 
third of the tube; anthers linear-oblong, acute. Ovary ovoid, glabrous ; 
style and stigma about 1 lin. long, the latter cylindric from a thicker 
base, bifid. Fruit obovoid-globose, 11-3 in. in diam. ; seeds angular, 6—8 
lin. long, numercus.—K. Schum. in Engl. Jahrb. xv. 404, 406, 408, 410, 
fig. 1, A.C.D.E.; Christy, New Comm. Plants & Drugs, vi. 54; Ficalho, 
Pl. Uteis Afr. Port. 42, 218-220; Kew Bulletin, 1892, 68 ; L. Planch. 
Prod. Apocyn. 318; Dewévre, Caoutch. Afric. Monogr. Landolph. 46 ; 
K. Schum. in Engl. Pfl. Ost-Afr. B. 225, 445, 457-8, fig. A, C-E.; C. 
315, in Engl. & Prantl, Pflanzenfam. iv. ii. 130, fig. 50, A, C-E., and 
in Eng). Jahrb. xxviii. 452 ; Chimani in Bot. Centralbl. xi. (1895) 456, 
t. ii. fig. 18, 24, 25; Vogtherr in Kohler, Mediz. Pflanz. sub Lan- 
dolphia comorensis ; Moller in Tropenpfi. i.(1897) 187; J. R. Jackson in 
Bull. of Pharm. xi. (1897) 255; Pierre in Bull. Soc. Linn. Paris, 1898, 
‘14; Jumelle, Pl. A caoutch. et 4 gutta, 58; Morris in Journ. Soc. Arts, 
xlvi. 779; Sadebeck, Kulturg. Deutsch. Kolon. 272, 276; Warb. in 
Tropenpfi. iii. (1899) 222, 314, 311, fig. A-C., and Kautschukpfl. 120, 
117, fig. A-C ; Mikosch in Wiesner, Rohstoffe, ed. 2, i. 363; Liebert 
in Tropenpfl. iv. (1900) 367; Hallier f. Kautschuklianen in Jahrb. 
Hamburg. Wissensch. Anstalt. xvii. (1899), 3. Beih. 38-41, 71-74 excl. 
var.; Henriques, Kautschuk, Tab. iv.; Schlechter, Westafrik. Kaut- 
schuk-Exped. 229 ; Hook. Ic. Plant. t. 2755 ined. JZ. elastica, Vatke 
ex Dewévre, l.c. L. tomentosa, Dewevre, l.c. 45 (the Zanzibar plant). 
L. polyantha, K. Schum. in Engl. Jahrb. xxviii. 452. JL. sp. 
(Kirk’s specimens), Collins, Report Caoutch. 28. Vahea Kirkii, Sadeb. 
in Jahrb. Hamburg. Wissensch. Anstalt. ix. i. (1891) 226. V. elastica, 
Klotzsch ex Dewevre, l.c. 46. Carissa sp., Collins, Le. 
Wile Land. British East Africa: Mombasa, Hildebrandt, 1999! 
Mozamb. Dist. German East Africa: Usambara ; Amboni, Holst, 2475! 
. Masheua, Msagati, Holst, 8844! Pangani, Stuhlmann, 59. Usaramo; Dar-es-Salaam, 
Hildebrandt, 1222! Stuhlmann, 49! 50, 8533! 30 miles inland from Dar-es-Salaam, 
Kirk! Kisserawe, Stuhlmann, 6185! Useramo Plateau, Goetze, 10! Kingani, 
Stuhlmann, 6586! Mengwa, Stuhlmann, 8614! Kola, Busse, 82! Pugu Hills, 
Goetze, 5! Barikiwa, Traun; hillsides near Langenburg, 1600 ft., G@étze, 871! 
Portuguese East Africa: Lower Zambesi; Boror, Peters! Shupanga, Kirk, 12! 
British Central Africa: Nyasaland; Shire Highlands, Buchanan! Zomba Plateau, 
Whyte, 3! and without precise locality, Buchanan, 182! 220 partly! Stevenson 
Road, 5000-6000 ft., Scott-Elliot, 8375 ! 
This is one of the most important rubber plants of East Africa. A small-leaved 
variety occurs at Delagoa Bay (Z. Kirkti, var. delagoénsis, Dewevre, 1.c. 48). 
Var. 8 dondeensis, Stapf. A shrub, 6-9 ft. high, with pendulous branches or 
rambling amongst other shrubs and tiees. Fruit globose, pale yellow when tresh, 
bluish-black when dry, 3-3} in, in diam. ; pericarp 3 lin, thick, smooth ; seeds about 
