2 Mededeelingen van ’s Rijks Herbarium Leiden: 
of the spikelet and we can separate the two genera only by ; 
looking how these spikelets are placed on the rhachis, but it is not _ 
always easy to find the correct disposition in the dried afd pressed 
herbarium specimens. 
The genus Urochloa is a very curious one. In nearly all the 
species occur parallel states, one with glabrous and one with 
pubescent spikelets. The glabrous state is predominant in some 
species and the pubescent state rare or not yet known, in other 
species the pubescent form is common. But in this genus we find 
another very striking character, as some species have a submar- 
ginal fringe of long hairs appressed to the side nerves of the lower 
floret (generaly called the third glume). These hairs are spreading 
when the fruits become mature. It seems that the presence or 
absence of this fringe is not in correlation with the pubescence or 
glabrity of the spikelets. Among African species and also in an 
Indian one we find this fringe equally on the spikelets with or 
without pubescence. In the wellknown Urochloa trichopus, STAPF 
(= Panicum trichopus, Hocusr.) the state with the submarginal 
fringe is common. Urochloa Helopus, Stapr (= Panicum Helopus, 
Trin.) is an example for a species with glabrous or pubescent spi- 
kelets, the pubescent state sometimes having the submarginal fringe. 
This combination is very rare and hitherto only known from a 
collection gathered by JacQuEMONT near Poona in India. The cour- 
tesy of Dr. Stapr enabled me to get an idea of this very rare 
state. This was of a great importance for me, the Poona plant 
coming nearest to the new species l intended to describe. 
Urochloa marathensis HENR. nov. spec. (= Panicum marathens 
Henr. in Herb. Lugd. Batav.). i 
Annua, nana sed robusta, glauca, ex geniculis inferioribus ramos’; 
culmi humiliores, striati, glaberrimi, paucinodes, nodis pubescentibus — 
Vaginae teretes vel leviter compressae, striatae, inferiores hiantes, — 
superiores arctae, omnes pilis basi tuberculatis hirsutae, internodiis 
breviores. Ligula brevissima, pilis longis stipatus. Laminae e bas. | 
cordata lineari-lanceolatae, sensim acutatae, plus minusve 3 c 
longae, 5—7 mm latae, planae, utrinque, sed praesertim pag — 
superiore, pilis patulis basi tuberculatis parce vestitae, m Bs 
Incrassato distincte undulato, pilis longis tuberculatis fimbrisó E 
Racemi 2—3 inter se plus minusve 1 cm distantes, 2 cm longi, crassh S | 
erecto-patuli vel demum reflexi, rhachi subtrigona, basi in a% F 
pilosa, spiculis plus duplo angustiore, leviter undulata, WR: 
scaberula, ceterum glabra, pedicellos solitarios edente. spicula? : 
biseriales, late ellipticae, acutissimae, 4 mm longae, inversae, antic? i 
