СУРЕКАСЕФ IN THE WELWITSCH HERBARIUM. 157 
humidis editis ejusdem loci et Cazella, Jan. Febr. 1857, no. 6836; in rupestribus breviter 
herbidis subhumidis prope Catete ipsius Preesidii, denso agmine crescens, no. 7166. 
This is a very beautiful variety, and may perhaps be a distinct species; but the only 
specimens of the typical plant which I have seen are not in a very good condition, and 
the plant wants reexamining with a better suite of specimens. In what may be taken, 
from the description, as typical Nemum spadiceum, Desv., the spikelets are solitary, more 
cylindrical, sometimes as much as half an inch in length, more lax, with chestnut- 
coloured glumes, and without any trace of ciliation. In these respects the plants col- 
lected by Afzelius and Smeathman in Sierra Leone, in Herb. Brit. Mus., and by Morson, 
in Herb. Kew., all agree. All, however, seem to be in the same condition—in faet, 
almost past the flowering state; this may aecount for the laxity and paler colour of the 
spikelet. Steudel, Syn. Glum. ii. 106, refers with doubt to this species a plant gathered 
by Jardine “іп Insulis Loss, Guinea." He says of it, * squamis spadiceis (coloris T'rifolii 
spadicei florum)" and Boeckeler, in Linnza, l. c., describes the glumes of both African and 
West-Indian specimens as “ ferrugineo-sanguinescentibus ;" both of these descriptions 
agree with the plants of Smeathman and Morson. Boeckeler describes the nut as “ fus- 
cescens straminea nitida; " but it is probable that in his specimens it was not тіре, or 
possibly it may vary in colour, as it does in some other Сурегасее. In all the plants 
which I have examined, the colour is black and shining by reflected, and chestnut by 
transmitted light, and Steudel, 1. c., says of Jardine's plant **caryopsi brunnea tandem 
nigrescente." Boeckeler gives the height of the plant аз 11-7 inches. Dr. Welwitsch’s 
plants vary from 2 inches to 2 feet. The plant is also recorded as having been gathered in 
S. Domingo, in the West Indies (Lamarck, 1. c.), but apparently not of late years. 
S. ARTICULATUS, L. Sp. pl. 47. Isolepis prelongata, Nees, Wight. Bot. 108; 1. sene- 
galensis, Hochst. Herb. un. it. no. 1194. | 
Pungo Andongo, rarissimus in sylvestribus editioribus ad Pedras de Gunga, cirea stagna 
profunda cum Lythraceis, Martii 1857, no. 6850. 
Var. MAJOR, Boeckeler. S. articulatus, Rottb. 1. с. 53. 
Congo, late czespitosa ad margines stagni Lagoa de Quizemba, socialis cum Cypero 
articulato, Nov. 1853, no. 6978. 
Icolo e Bengo, frequens circa lacum dictum Lagoa da Funda, Sept. 1857, no, 6979. 
Abundant in Tropical Africa and Asia, and occurring also in Australia. 
S. CUBENSIS, Kunth, Enum. ii. 172. Anosporum cubense, Boeckeler, 1. с. 359; Oxycarium 
Schomburgkianum, Nees, Сур. Bras. 90; Isolepis echinocephala, Oliver, in Linn. Trans. 
xxx 167. | 
Dande, rarior (unico loco visus), in terra humosa ab inundatione fluminis Dande relicta, 
ad ejus dextram ripam prope Bombo, no. 6994. 
Pungo Andongo, in paludibus cum Phryni specie socialis, prope Umbilla ad flumen 
Cuanza, Quisonde, no. 6848. 
In Africa it has occurred also by the Nile, lat. 2? and near Khartoum (Grant), and 
on the White Nile (Werne), and is also a native of the West Indies and South America. 
