Parietaria. ] CXXIIIp. URTICACEX (Rendle). 299 
Aderbati and on Mount Selleuda, Dillon ; and without precise locality, Schimper, 
587! Eritrea: below Gheleb, 5500 ft., Schweinfurth, 1622! above Ginda, 
3000-5000 ft., Schweinfurth, 509. Nubia: below Erkowit, Broun, 1195! 
Widely distributed in temperate regions and on high lands in the tropics. 
15. FORSKOHLBEA, Linn. ; Benth. et Hook. f. Gen. Pl. iii. 393. 
Flowers moncecious, embedded in wool within a more or less cam- 
panulate involucre. Male flowers forming an outer ring, indefinite ; 
perianth club-shaped in bud, splitting in flower and somewhat 
irregularly 3-lobed above, the middle lobe suberect or inflexed. 
Stamen 1. Ovary-rudiment absent. Female flowers 1 or more in 
the centre of the involucre; perianth absent. Ovary straight ; 
stigma filiform, shortly hairy on one side, persisting for some time ; 
ovule erect from the base. Achene enclosed in the involucre and 
enveloped in wool, elliptic-ovate, compressed, often apiculate ; peri- 
carp tough. Seed conforming to the pericarp; testa membranous ; 
albumen scanty or absent; cotyledons broad, flattened.—-Herbs, 
sometimes becoming woody at the base, or shrubby, often more or 
less hispid. Leaves alternate, stalked, toothed, triplinerved or 
penninerved, often whitish-tomentose beneath, and rough on the 
upper face with dot-like cystoliths; stipules lateral, free. a 
volucres generally several sessile at the nodes, bearing long silky 
hairs on the outside ; bracts generally 3-6, free or connate below, 
the upper portion often more or less expanded. Male flowers stalked, 
generally projecting slightly ; female sessile, the stigmas only pro- 
Jecting —Caidbeja, Forsk. Fl. Mgypt.-Arab. 82. 
Species 7 or 8, throughout Africa including the Western Islands, Arabia to 
Western India, one in 8.E. Spain. 
Limb of involucral bracts acute, erect in fruit. ac: 
Leaves obovate or rhomboid, obtuse aes .. 1. F. tenacissima. 
Leaves ovate or elliptic-ovate. 
Bracts lanceolate-spathulate, very acute. Leaves : 
blackish when dried... vee es .» 2. FP. hereroensis. 
Bracts narrowly obovate above, shortly acute. 
Leaves green when dried . re ve 
Limb of involucral bracts blunt, ample, spreading in 
3. F. Henii. 
fruit. ; 
Leaf-teeth acute, blade whitish-tomentose beneath 4. F. candida. 
Leaf-teeth blunt, green on both sides or sometimes 
thinly tomentose beneath ... ee : 5. F. viridis. 
1. F. tenacissima, Linn. Mant. 72. A herb becoming woody 
below or shrubby, with a stout perennial root, from a few inches to 
2 ft. high, diffusely branched from the base ; branches ascending, 
hispid with spreading spiny and hooked hairs and shortly tomentose 
between, often reddish, leafy with short internodes. Leaves rounded, 
