58 comPosIT#& (Harv.) [| Adenostemma. 
after flowering, its scales in a single or double row, connate at base, 
oblong, herbaceous. Cor. shortly tubular, funnel-shaped, 5-toothed, 
villous externally. Stigmata 2, much exserted, linear, dilated, coloured. 
Achenés oblong, bluntly angular, crowned with 3-5 short, rigid, spread- 
ing, gland-tipped bristles. DC. Prodr. 5, p. 110. 
Tropical and subtropical herbaceous plants, natives of both hemispheres. Leaves 
opposite, petiolate, toothed, 3-nerved at base. Heads panicled, pedicellate. Flowers 
white.—Name from adny, a gland, and oreupa, a crown. 
Stem pubescent; leaves coarsely and sharply toothed ... ... ... (1) Caffrum. 
Stem nearly glabrous ; leaves with blunt, shallow teeth or crenate... (2) Dregei. 
1, A. Caffrum (DC. 1. c, 112); stem erect, 4-angled, thinly puberu- 
lous or scabrid below, more densely pubescent on the panicle ; leaves 
ovato-rhomboid, acuminate, broadly cuneate or truncate at base, coarsely 
callous-toothed, nearly glabrous above, pubescent, especially on the 
nerves, beneath; panicle loosely dichotomous; invol. scales linear-ob- 
long, obtuse, thinly downy at back; achenes granulato-muricated. ; 
Has. Caffraria and Natal, Drege, Williamson, Gueinzius, 347; Bowker, 34; Gerr. 
& M’K. 313. (Herb. D., Sd., Hk.) 
A tall, coarse-growing weed. Leaves 3-5 inches long, 2-3 inches wide, herbace- 
ous. Panicle terminal, irregularly forked, covered with rusty, subappressed hairs. 
Bracts small, few, linear. Petioles $-1 inch long. Invol. partially biseriate. 
2, A. Dregei (DC. l.c. 111); stem sub-erect (or erect), sparingly 
muricated, especially about the nodes, otherwise glabrous ; leaves con- 
spicuously petioled, ovato-deltoid, cuneate at base, acute, bluntly cal- 
lous-toothed, sparsely hispidulous on both sides, scabrid on the nerves 
beneath; panicle loosely forked, the pedicels long, slender, puberulous; 
invol. scales linear-oblong, obtuse, hispidulous; achenes granulato-mu- 
ricated. Also A. Natalense, DC. l. ¢. 112. 
Has. Near Natal, Drege! Gerr. dé M’K. 313. (Herb. D., Sd., Hk.) 
A weaker, more slender, and more glabrous plant than A. Caffrum, with larger, 
thinner, more evidently petioled and less coarsely serrate leaves, and very lax inflo- 
rescence, Leaves 4-6 inches long, 3-4 inches wide. Stem rooting at the base, 2 ft. 
high. I cannot distinguish A. Natalense specifically. 
X. MIKANIA, Willd. 
Heads 4-flowered. Recept. naked, narrow. Jnvol. 4-leaved, bracteolate 
at or below the base. Cor. with a short tube, and bell-shaped, 5-cleft 
limb. Anthers sub-exserted. Achenes angular. Pappus of many, rough 
bristles, in one row. DC. Prod. 5, 187. 
; Tropical and sub-tropical, mostly climbing shrubs or herbs, chiefly American, 
with outliers in India, trop. Africa, and Madagascar. Leaves opposite, petioled, 
mostly cordate or sagittate. Heads in the S. African species corymbose. Corolla 
pale-coloured. Name in honour of Prof. Mikan, formerly of Prague. 
All parts pubescent; leaves velvetty beneath ... ...... (1) Natalensis. 
Stem glabrous ; leaves either glabrous, or hispidulous beneath (2) Capensis. 
1. M. Natalensis (DC. 1. c. 198); herbaceous, voluble, slender, more 
or less pubescent in all parts ; leaves petioled, cordato-sagittate, acumi- 
nate, sinuato-dentate, S-neryed, densely velvetty beneath, thinly pubes- 
