104 Rob. E. Fries: Zur Kenntnis der Phanerogamenflora 
U. S. Geol. Survey, no. 204, p. 79, pl. XV, fig. 3) and to~S. obtusifolius 
Lesq. (Ann. Rept. U. S. Geol. and Geog. Surv. Terr., 1873, p. 419, Tert, 
Fl., pl. XLIX, figs. 8—11; Cret. and Tert. F1, pl. XLVII, figs. 5—7) but 
differs in the more tapering base. It is possible that all specimens might 
not exhibit this characteristic to the same extent, in which case the 
similarity with S. oregonianus would be very close. 
Sunderland Formation. Near the headwaters of Island Creek, 
Calvert County. Maryland Geological Survey. 
11. Bumelia pseudo-lanuginosa Hollick, |. c., p. 236, pl. LXXI, fig. 18, 
19 [fossil]. E 
Leaves spatulate or oblong-spatulate in shape, entire, narrowed to 
an acute or wedge-shaped base; apex not known; midrib well defined; 
secondary nervation obscure and fine. 
These leaves bear a very close resemblance to several of those of 
living species of Bumelia, especially B. lanuginosa Pers. and B. monticola 
Buckl., from either of which could be selected specimens which would 
match them exactly in outline, but the absence of definite nervation 
renders accurate comparison impossible. 
Sunderland Formation. Near the headwaters of Island Creek, 
Calvert County. Maryland Geological Survey. 
XXXIII. Zur Kenntnis der Phanerogamenflora der Grenz- 
gebiete zwischen Bolivia und Argentinien. III. 
Von Rob. E. Fries. 
(Auszug aus: Arkiv för Botanik, Bd. 6 (1906), no. 216 pp.) 
ll. Malvales. 
8. Bombax argentinum R. E. Fries, |. c., p. 3 (Taf. I, Fig. 1—5). 
Arbor 8-10 m alta, trunco laevi et spinis destituto, viridi, usque ad 
0,5 m crasso, medio non vel paullulum incrassato; ramulis novellis circ. 
1 em crassis, fulvis, cicatricibus foliorum delapsorum dense instructis. 
Foliis septenatis (?); foliolis rigide membranaceis, integerrimis, sessilibus 
vel petiolis brevissimis (ad 1 mm longis) suffultis, obovatis vel late obo- 
vatis, basim versus sensim cuneatis, apice rotundatis et acumine obtuso 
usque ad 1 em longo, vulgo tamen breviori instructis, vetustioribus supra 
glaberrimis et subtus pilis stellatis cinereo-flavescentibus adpressis parce, 
in nervis densius vestitis; costa supra valde impressa subtusque promi- 
nente, nervis lateralibus utrinque 12—15, [sicut venis] supra planis et 
subtus valde prominentibus, marginem versus inter se arcuatim con- 
junctis; laminis maximis reportatis 17 cm longis, 9 cm latis, minimis 
