GRASSES OF GRONOVIUS’S FLORA VIRGINICA. 127 
Holcus striatus L. Sp. Pl. 1048. 1753. 
The type specimen is a Gronovius plant numbered 590, upon which Linnweus has 
written ‘‘7 striatus.’’ It is Sacciolepis striata (L.) Nash (Panicum gibbum FI1.). 
Clayton no. 590 in the Gronovius herbarium is the same. 
Apluda zeugites L. Syst. Nat. ed. 10. 2: 1306. 1759. 
The type specimen is from “ Br.’ It is Zeugites americana Willd., which, however, 
must be called Senites zeugites (L.) Nash in litt. Senites Adans. replaces 
Zeugites R. Br., which is a hyponym. 
Cenchrus echinatus L. Sp. Pl. 1050. 1753. 
The type specimen, which belongs to this species as usually understood, is marked 
by Linneeus ‘“‘echinatus” without indication as to its origin. Following a number of 
other synonyms Linnzeus4@ cites Sloane, page 108. The habitat given by Linnieus is 
‘Jamaica, Curassao.”’ 
Cenchrus tribuloides L. Sp. Pl. 1050. 1753. 
The type specimen, from “K,’’ is the large-burred species of the Atlantic coast 
which has been called C. macrocephalus (Doell) Seribn. and to which the Linnean 
diagnosis ‘‘C, glumis semineis globosis muricato-spinosis hirsutis’’ and habitat ‘‘in 
Virginiae maritimis’’ better apply than to the inland plant that has been going under 
the name tribuloides. The inland species must be called C. carolinianus Walt. The 
Gronovian specimen (Clayton no. 206) is the same as the Linnean. Sloane’s plate 65, 
figure 1, is cited by Linnzeus.b  Sloane’s specimen is C. carolinianus Walt. 
THE GRASSES OF GRONOVIUS’S FLORA VIRGINICA. 
The herbarium of Gronovius is incorporated in the general her- 
barium of the British Museum of Natural History. The specimens 
upon which Gronovius based his dese ription in his Flora Virginica 
were collected in Virginia by John Clayton. Each sheet usually 
bears a diagnosis and the Clayton number, both of which are given 
by Gronovius, thus connecting the Clayton specimens with the species 
described in the Flora Virginica. The species are given below in the 
sequence in which they occur in the first edition of Gronovius’s Flora 
Virginica (part 1, 1739; part 2, 1743), the diagnoses being quoted 
from that work. Many of these polynomials are cited by Linnxus 
as synonyms under his own species in the first edition of the Species 
Plantarum and are referred to in the discussion of the corresponding 
Linnean species, in a preceding portion of this article. 
Panicum paniculatum floribus muticis. Gron. Fl. Virg. 1: 1739. 
Clayton, no. 3881. No specimen was found. I am unable to identify this plant. 
Gronovius cites also Pluk. Alm. 176. ¢. 92. f.7. This appears to be a Panicum resem- 
bling P. clandestinum L., but it can not be certainly identified from the figure. This 
species of Gronovius is not cited by Linnzus. 
Panicum panicula capillari erecta, foliis pilosis. Gron. Fl. Virg. 1: 13. 1739. 
Clayton, no. 454. The specimen is Panicum capillare L., of which it is the type. 
Poa spiculis ovatis oblongis nitidis, panicula diffusa. Gron. Fl. Virg. 1: 13, 1739. 
Clayton, no. 273. This is cited by Linnzeus under Poa flava, of which it is the type. 
The specimen is Tridens flava (L.) Hitche. (Priodea cuprea Jacq. Za 
@ Also Sp. Pl. ed. 2. 1488. 1762, 
bSp. Pl. 1050, 1753 and ed. 2. 1489 1762. 
