21 
P. lanuginosum Ell., collected by Drummond, is a form of P. dichotomum L. 
of Brookland, D. C.) 
P. nitidum var., which is 450 P. dichotomum (the Brookland, D. C., form). 
Panicum hydrophilum Trin. Specimens from Brazil, collected by Riedel, look 
like P. agrostoides, but the spikelets are still smaller and the leaves only an inch 
and a half in length. 
Panicum rise ignc Muhlbg. (Fig.10.) One individual with three flowering 
stems from Hooker's herbarium, collected at New Orleans. The basal leaves are 
long and acute, the spikelets dark purple and hairy. 
` Panicum rafinesquianum Schult. (Fig. 11.) There are two specimens from Nees 
ab Esenbeck in the herbarium of Lindley, one of which I have drawn. The 
basalleaves are broad and short, the upper ones, on the 
contrary, long and linear; the panicle is somewhat 
narrow and resembles that of P. depauperatum, but the 
spikelets of rafinesquianum are smaller. The plant 
is mim A exe BR he —a sheaths and 
downy spikelets; umes d distinctly 
“-nerved. On the label is written . Ee 
Schult. Mant. = P. rafinesquianum (eee There 
is, ever, another ipiis from Alabama from 
Hooker's herbarium, which is labeled “ P. limone 
Schult. var. ramosum,” and this specimen is much 
branched, especially from the base, by which it re- 
minds one iore of P. depauperatum than of the Nees ab 
Esenbeck specimens. 1 think that P. rafinesquianum 
1 is well distinguished from P. wig m. 
PANICUMS IN THE HERBARIUM OF 
WILLDENOW. 
Panicum barbulatum Lam. (Fig. 12.) This is also 
labeled P. pubescens Michx. The specimen is only t 
autumnal stage of P. dichotomum. 
Panicum laxiflorum Lam. (Fig. 13.) A young speci- 
men with the 5 leaves, and she aths minutely 
downy. On the label is also written ** P. heterophyl- 
>» 
ue 
Panicum agrostoides Muhlbg. This is our P. elongatum 
Pursh. Willdenow has added on the label * P. rigi- 
dulum Bosc.” 
Panicum latifolium L. This is our typical species, but 
` collected in the autumnal stage. It is also labeled Fie. 13.— m hetero- 
| “ P. walteri Poir." and “ P. scoparium Michx.” phylum (W.) P. laxiflorum 
Panicum 5 bably Bischoff). Fis. Lam. an Spr.?” Leaves, 
7 14.) N pe ce i uk LU AUN, sn. SEDI M 
. eee a : utely downy. (Willd. Herb., 
i ` Panicum, perhaps nitidum. The glumes are downy, Mus, Berol.) 
E the leaves ciliate and the a hairy. 
Panicum clandestinum L. Thisis a few-flowered specimen of the autumnal stage, 
with the 1 „ in the shea 
Panicum ros 5 This is our P. an 
Panicum dic This specimen fro in Virginia is our common form, but 
the autumnal stage with the spikelets 2 55 off the main inflorescense, and 
with a profuse development of lateral shoots "a Apr inflorescences. 
Panicum heterophyllum W. This specimen sen t by Muhlenberg from North 
113 3 + ookland. D. 
! t , 
