Decades novarum specierum florae katangensis. XXII—XXVI. 205 
acutis, tubo radiis basi velutino, ligula dorso sparse velutina, apice 
trilobata, 8—11 mm longa et 4,5 mm lata, 7-nerviata, intus brevi velu- 
tina; floribus disci tubo basi velutino. 
Katanga: Shinsenda, 1912 (Ringoet, no. 6); Uvira (Tanganika), 
1908 (Rouling). 
Obs. — Kommt in die Nähe von @, abyssinica Cass. 
243. Guizotia Kassneri De Wild., nov. spec. 
Ramis erectis ultra 40 cm altis, velutino-scabris, internodiis usque 
5— 6 em longis; foliis lanceolatis, integris, sessilibus, basi connatis apice 
subacutis, usque 12 em longis et 10—12 mm latis, margine revolutis, 
supra et infra velutino-scabris; capitulis terminalibus, plus minus hemi- 
sphericis, pedicellatis, pedicello gracili usque 2 cm longo, velutino- 
scabro, squamis involucralibus externis lanceolatis, acutis usque 15 mm 
longis et 4 mm latis, velutino-scabris, margine ciliatis, squamis internis 
extus velutinis sed non scabris, intus glabris; radiis luteis, basi velu- 
tinis, apice tridentatis, floribus disci tubo velutinis; ovario glabra. 
Katanga: Bords du Tanganika, mai 1908 (Kassner, no. 3031). 
Obs, — Verwandt mit G. Schultzii Hochst. 
CXVIII Vernonia (Compositaceae). 
244. Vernonia graciliflora De Wild., nov. spec. 
Ramis erectis usque 40 cm longis, scabris, longitudinaliter striatis; 
foliis obovatis, sessilibus vel breviter petiolatis, inferioribus reductis 
plerumque 4,5 cm longis, medianis usque 12 em longis et 4 em latis, 
lamina supra scabra, infra sparsa velutino-scabra, apice rotundata vel 
late cuneata, basi plus minus rotundata, subintegra vel margine bre- 
viter denticulata; capitulis usque 5 cm latis terminalibus, pedunculatis, 
peduneulo usque 3 em longo, cymosis; squamis involucralibus pluri- 
seriatis, externis reductis usque 8 mm longis et infra 2 mm latis, me- 
dianis majoribus, basi scariosis, apice foliosis et usque 7 mm diam, 
internis usque 2 cm longis, margine ciliatis; corolla violacea circ. 28 mm 
longa, tubo gracili cylindrico usque 19 mm longo apice leviter inflato, 
staminibus plus minus longe exsertis; achaeniis velutinis circ. 2 mm 
. longis, costulatis, pappus stramineus, setis externis brevis, internis ciliatis 
usque 15 mm longis. 
, Katanga: Shinsenda, mars 1912 (Ringoet, coll. Homblé, no. 533); 
Elisabethville, février 1912 (Homblé, no. 256 et 178). 
Obs. — Diese neue Vernonia (Stengelia)-Art ist mit V. Calvoana Hook. f. 
Verwandt, die Blütter haben keine Aurikeln. 
245. Vernonia albo-violacea De Wild., nov. spec. 
Planta usque 2 m alta; ramis erectis, basi lignosis, juvenilis velu- 
tino-tomentosis demum glabris, longitudinaliter striatis; foliis basi in pe- 
tiolum plus minus angustatis vel subsessilibus, lamina elliptica, basi 
plus minus longe cuneata, apice cuneato-acuta, supra velutino-scabra, 
infra tomentoso-grisea, usque 12 cm longa et 4,5 cm lata, nervis la- 
teralibus I utrinque 11—12, margine irregulariter et plus minus profunde 
