THE ERLANGEAS OF § BOTHRIOCLINE 159 
euli ares summum 0:3-0-4 cm. long. Involucri phylla exteriora 
penal . ong. ; ; interiora usque ad 0: ng. Corolle in 
oto em. long., lobi 0-2 em. Achewnia 0:12 om. 
ee gs enia 0:12 cm. long., pappi 
E. fus ais nov. Caule subtereti longitrorsum costato inter 
costas griseo-pubescente, foliis oppositis brevipetiolatis oblongis 
obtusis basi rotundatis margine serratis pergamaceis fac. sup. fere 
glabris saltem in sicco fuscis fac. inf. griseo- ease PCa capitulis 
circa 25-flosculosis sessilibus vel breviter pedunc ad apices 
pedunculi ramosi pubescentis ae et ae oe cam- 
panulati 4-serialis phyllis ovato-oblongis ooeur margine anguste 
scariosis extimis abbreviatis et dorso pubescentibus, cactila ex- 
sertis, corolle tubo a medio a mplificato, aches eylindricis apice 
dilatatis, pappi setis scabridis caducissim 
Hab. British Hast 
i ie sie 
Folia superiora solummodo visa 2-0-4-0 cm. ., 0°8-2:0 cm. 
a 
Sees pea 0-25-0'3 om.) intima 0-4-0-45 em. long. oe in 
) 
itself differs from Vernonia only in the raptetg 
reduced choad and the pappus of few, short, very « eee: 
This reduction of the achenes seems correlated with that of the 
pappus; but the latter, one to its extremely frail attachment to 
the achene, cannot func as its carrier. May it be that the 
sete serve to keep the "Aste distinct from one another, so as 
to render pollination more certain? Against this we should 
remember that the pappus of Gutenbergia has completely dis- 
eh ara the florets therefore of that closely-allied genus suffer 
rom wanting a pappus. The reduction in the pappus . 
sia possibly be of advantage in preventing ae liberated achenes 
from straying too far, and so causing the flowers to run less 
chance of cross-fertilization. Obviously this reduction would be 
more efficacious if the achenes underwent diminution in size while 
the pappus was still unreduced. 
Although monotypic up to a few years ago, to-day the genus 
all Africa : 
is one of no fewer than thirty-two species, a except one 
from New Guinea—a good instance, this, of the rapid in 
our recent knowledge of the A It is also interesting 
fr 
Saag to some extent it coincides with Vernonia, and t 
ms to point to its multiple origin—to its being, in fact, an 
artificial and not, if the term may be allowed, a genetic genus. 
* Since Metin the above I have seen at Kew better SS eee of Ae 
species (Britis + Africa, Aberdare Mts.; Sir Evan Jame Upper Ma 
Plateau ; 4. i) The largest leaves of these measure oe ont . in Zaigth, 
and are 3°5 em ‘ 
ci 
