266 MESSRS. T. A, SPRAGUE AND J. HUTCHINSON ON 
Differs from the type in the nearly glabrous flower-buds with longer horns, 
and the almost glabrous prickles of the fruit. 
Somaliland: Fullah Valley, between rocks on mountain-slopes, Ællenbeck, 
234! Aroweyna, on stony ground, Ællenbeck, 406!  Milmil, Donaldson 
Smith! Ogaden Country, Robecchi Bricchetti, 591! Somaliland and Harar: 
Ellenbeck, 1035 ! in thick forest on the banks of the river Gobelle, Ellenbeck, 
10491 (a shade form). 
Var. rodriguesiana, nob.— 7. glandulosa, Balf. f. Bot. Rodrigues, 30, non 
Forsk. 
Folia suborbicularia, basi obtuse cuneata, apice rotundata, 1-25 cm. 
diametro. Alabastra matura tomentella, in sicco 4-5 mm. longa, cornibus 
satis conspicuis patulis. Aculei fructus matari puberuli, uncinati. 
Differs from the type in the tomentellous flower-buds and the puberulous 
prickles. 
Rodrigues: Balfour, 1075 ! 
40. T. rhomboidea, Jacq. Enum. PL Carib. 22 (1760); Select. Stirp. Am. Hist. 
147, 6. 90 (1763) : DC. Prodr. i. 507 (1824) ; Lindl. Collect. Bot. t. 29 
(1821) ; Harv. in Harv. et Sond. Fl. Cap. 1. 227 (1860); Mast. in Oliver, 
Fl. Trop. Afr. 1. 257 (1868), partim ; Mast. in Hook. f. Fl. Brit. Ind. i. 
395 (1874); К. Schum. in Mart. Fl. Bras. xii. 2. 132 (1886). 
Bartramia indica, Linn. Sp. Pl. 389 (1753). 
T. Bartramia, Linn. Syst. ed. 10, 1044 (1759); Sp. PL ed. 2, 638 (1762) ; Willd. Sp. РІ. 
ii. 854 (1799); Roxb. Fl. Ind. ii. 463 (1832); Trimen, in Journ. Linn. Soc., Bot. 
xxiv. (1887) 141. 
T. trilocularis, Roxb. Hort. Beng, 36 (1814); A. Rich. in Guill, & Perr. FI. Seneg. 95 
(1831); Roxb. HL Ind. ii, 462 (1832) ; Е. N. Williams in Bull. Herb. Boiss. sér. 2, 
vii. (1907) 201. 
Т. mauritiana, Presl in Oken, Isis, xxi. (1828) 273. 
T. velutina, Sieber ex Presl, 1. c. 
Г. diversifolia, Е. Mey. in Drége, Zwei РЯ, Docum, 227 (1843), nomen. 
Т. riparia, Hochst. in Flora, xxvii. (1844) 295. 
T. effusa, J. M. Wood, Natal Plants (1902), t. 259, non Е. Mey. 
Vegetative members polymorphic. Hairs stellate.  Flower-buds con- 
stricted in the middle. Sepals strongly cucullate above. Stamens 15, rarely 
fewer. Ovary 2-3-celled. Fruit globose or ovoid-globose, 4-5 mm. long or 
in diameter including the prickles ; body densely tomentose ; prickles 
uncinate, glabrous. 
Distributed throughout the tropies. 
The forms of T. rhomboidea are so numerous and varied that it is proposed 
to devote a separate paper to their elucidation. Typical rhomboidea, as repre- 
sented by a specimen from Jaequin in the British Museum, has rhomboid- 
orbicular leaves, stellate-puberulous above, pubescent below; clavate buds, 
hardly 5 mm. long in a dried state, sparingly stellate-pubescent, and hardly 
horned. 
