ER Vermischte neue Diagnosen. 
went 
lineares apice bi-vel subtridentata, dentibus rectis, interioris coronae ap- 
pendices anteriores erecti apice clavati recurvati, posteriores erecto- 
patentes subulati. 
Annulus verrucosus brunneus obscure maculatus, corona ubique 
transverse sulcata et verrucosa fauce obscura lobis luteolis maculis pur- 
pureis magnis varie punctata, margines linea rubra notati integri. Corona 
staminea lutea, brunneo-punctata. 
Affinis est Stapeliae variegatae, sed ramis brevius dentatis et corollae 
annulique forma et colore satis differt. : 
In horto Mortolensiculta, probabiliter ex Africa meridionali introducta. 
Sie gehórt in die Section Orbea, bei welcher die Blumenkrone um den 
Schlund mit einem fleischigen Ringe versehen ist. Sie ist durch die 
niedrigen, glänzend grünen und kurz gezáhnten Stengel und die trüb- 
roten, nur auf den Zipfeln etwas helleren Blumen leicht kenntlich, 
ausserdem erscheint der Ring sehr dick und fleischig. Der Geruch 
aller Orbea-Stapelien ist ein hóchst widerlicher, aber diese neue Art über- 
trifft darin noch die übrigen. 
44. Helianthus illinoensis H. A. Gleason in Ohio Nat., V (1904), p. 214. 
Erect, six to ten dm high, from a long running rootstock. Stem 
simple, slightly angled, densely villous below, pubescent above. Leaves 
six to eight pairs, strictly opposite, slightly scabrous above, softly pubes- 
cent beneath and villous on the veins, obtuse; the lowest four or five 
pairs oblong-lanceolate to ovate-lanceolate, three-nerved, entire, ten to 
fifteen cm long, tapering at the base into a villous winged petiole equalling 
or but little shorter than the leaves; the upper two or three pairs much 
smaller or bractlike, petiole short or none. Lower internodes five to 
eight cm in length, or the two lowest pairs of leaves approximate, upper 
internodes much longer. Inflorescence of one to seven heads; peduncles 
three to ten cm long; involucre broadly campanulate or hemispherical, 
eight mm high; scales lanceolate, acuminate, ciliate. Disk flowers yellow, 
rays about thirteen, two to three cm long, bright yellow, achenes minutely 
pubescent. Flowers in August. 
Illinois: On the sand dunes along the Illinois river near Havana, 
where it is common in the black-jack oak woods, especially along the 
edges and in the more open and sunny places. Material was collected 
in 1903 and 1904, and the type, collected on August 17, 1904, is in the 
herbarium of the Missouri Botanical Garden. 
Helianthus illinoensis is evidently closely related to Helianthus occi- 
dentalis Riddell, which it resembles in the reduction in size of the upper 
leaves. It is at once distinguished from the latter species by the villous 
pubescence and the greater length of the lower internodes. The two 
are sometimes associated in the field, but in general appearance they are 
entirely distinct. Helianthus occidentalis has broad, scabrous, light-green, 
short-petioled leaves which are nearly erect in a basal cluster, while in 
Helianthus illinoensis they are darker green, more or less spreading and 
scattered on the stem. 
