54 GRAMINE. 
Interior minor plana, bicarinata fusca glabra, bivenia. 
Lodicule 2, sub cuneate emarginate. Stam. 3, antheris 
semi-exsertis. Ovarium sesile rotundum glabrum. Styli 2, 
basi coaliti. Stigmata plumosa, ramis denticulatis. 
Caryopsis paleis et embryorum parallela compressiuscula, 
paleis circumcincta libera angusto-lanceolata, levis ; stylorum 
basi apiculat, albida. Embryo palez interiori oppositus. 
Panicula erecta hirta vel hispida ramis sub verticillatis sim- 
plicibus.* | 
Ambigit. Panicum et Ischemum inter. 
An Aire species, proximá quoad genus numo 3. page. 55. 
Gramina spiculis bifloris rudimento tertia nullo interjecto 
prope Paniceá sectione locanda, presertim propter florem infe- 
riorem sepe imperfecte evolutum. 
2. Aira viatica, Gr. Pl. CXLV. Fig. II. 
Spieule inzqualiter pedicillate, 2-4 aggregate biflore 
similes. 
Spice binatim ternatimve digitate 3-4 uncialis ascendentes, 
rachis rachillisque hirti-scabris. Glumæ 2, mutice, dissimiles, 
latissime, exterior minor convexa, basi subgibbosa, membra- 
nacea 3-venia, venis scabrellis mucronata arristata, arista scab- 
ra. Interior duplofere major, convexa, acutata 5-venia ; venis 
lateralibus per totam longitudinal, nec ne crista apice truncata 
cartilaginea? transverse secus faciem interiorem sulcatå mar- 
gine pilis longis hispido, ciliato-appendiculata. 
Flosculus inferior (exterior) masculus. 
Palez 2, muticze, exterior aliquoties major membranacea, 
subglumacea, concava, 5-venia ; marginibus, subciliatis. 
Interior subhyalina, profund bipartita, sinu nudo vel. lo- 
bulum dentiformem grandiuscula gerente, bivenia, marginibus 
involutis basi versus auriculatis, auriculis conniventibus apice 
subciliata. 
* It is important always to examine the flowers of the upper portion 
of the Panicle. 
