178 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 9 
73. PANICUM MACROPHYLLUM. “Juxta torrentes in vicinis Man- 
dioccae, et in Montibus Estrellensibus.”” The specimen is mounted 
on two sheets, one of three leaves, the sheaths overlapping, the blades 
30 cm. long and 8.8 em. wide; the other (evidently the summit of the 
same culm) with two leaves, the upper blade much reduced and split 
to the base, and a panicle 18 cm. long and 7.5mm. wide. The spikelets 
are crowded, 2.3 mm. long, the glumes and sterile lemma subequal, the 
lemma slightly longer, acute, scabrous on the nerves and pubescent 
near the margins, the sterile palea nearly as long as its lemma; the 
fruit is elliptic, subacute, smooth and shining, 1.8 mm. long, 0.6 mm. 
wide. The species is allied to Panicum latissimum Mikan and P. 
secundum Trin. It differs from the first in the strict panicle branches 
and the equal glumes, and from the latter in the much broader blades. 
I have seen nothing like Raddi’s specimen except Jardim Botanico do 
Rio Janeiro no. 575 (no locality but “‘Brasil’’?) in the U. S. National 
Herbarium. This differs from the type in having sheaths sparsely 
appressed-pilose, and somewhat firmer blades, which are split as is the 
upper blade in Raddi’s specimen. 
75. PANICUM PURPURASCENS. Raddi states that it grows with the 
preceding (Panicum maximum Jacq.) which is cultivated throughout 
the province of Rio Janeiro and is also found growing spontaneously. 
The specimen consists of a flowering culm, lacking the base, of Pani- 
cum barbinode Trin., as described by Hitchcock & Chase.*® The 
panicle is somewhat purplish. 
77. Panicum RupDGEI (8) BRASILIENSE. “Species rarissima obser- 
vata tantum in vicinis fluminis Inhumirim, in locis silvosis et herbosis.”’ 
The specimen consists of two pieces, one of four panicles, three axillary 
and a terminal one close together, each exceeded by its blade; the 
other of a single panicle and leaf. The specimen belongs to Panicum 
Rudgei Roem. & Schult. as described by Hitchcock and Chase.*® 
The nodes are slightly geniculate as noted by Raddi. 
83. SETARIA suLCATA. ‘‘In marginibus fossarum udarum prope 
Catumby, non procul ab urbe Rio de Janeiro.” The specimen is an 
entire rather small plant, the nodes and junction of sheath and blade 
yellowish hirsute, the broadest blade 18 mm. wide, deeply pleated, the 
panicle scarcely 2 cm. wide. It belongs to Chaetochloa poiretiana 
(Schult.) Hitche. as described in Hitchcock’s recent revision of 
Chaetochloa.*? On the ticket is written in Raddi’s script “‘Setaria 
sulcata nob., Panicum sulcatum Bert.” 
38 Contr. U. S. Nat. Herb. 15: 33. 1910. 
39 Contr. U. S. Nat. Herb. 15: 139. 1910. 
40 Contr. U. S. Nat. Herb. 22: 159. 1920. 
