Botanique. PYANAYLIAUREI S. 49 
Gramina utriusque orbis campos, segetes et locos humidos, alia tropicos, alia 
orbis antiqui grad. 40 — 60 habitantia, 1 —4-pedalia, culmo erecto I. 
basi procumbente. 
Folia linearia 1. lanceolato - linearia. 
Ligula mwembranacea. 
Thyrsus t, —5-pollicaris, densus, 1. Panicula longior.  Spiculae ovatae 1. 
(plerumque) obovatae, compressissimae, saepe deciduac. Glumae char- 
taceae, naviculares, aequales, flosculo hermaphrodito pl. min. longiores, 
3-interdum 5 —7—9-nerves, nervo dorsali carinali longe plerumque 
membranaceo-alato.  Floseuli 3: infimi 2 (rarissime unicus) coriacei, 
oviformes, pusilli, nunc nudi, nunc altero 1. utroque subulacformi - 
appendiculato: appendiculo 1-valvi, pertenui, hermaphrodito breviort, 
sterili.  Floseulus intermedius completus, 2-valvis, multo major, com- 
pressus, ovatus, acutus, valvula inferiori tenui-5-nervi; superiore ae- 
quilonga, multo angustiore, subinclusa, dorso approximatissime et tenui- 
binervi. 
Lodicula 0, 1. in Phal. arundinacea evoluta, ovario brevior, lanceolata, 2 - 
valvis. 
Stam. 3. Antherae lineares. 
Ovar. oblongum, compressiusculum, glabrum, liberum. 
Styli 2. Stigmata plumosa. 
Fructus ovato-oblongus, compressus, arcte inclusus sed hiber, eberbis, scu- 
tello suo fere ?/3 longior. 
I. Tuyrsus. 
4. Rudimenta 2, integra, chartacea. 
1) Phalaris canariensis L. sp. pl. ed 1. Thyrso ovali, 1 — 1/2-polli- 
cart; Glumis 5-nervibus, acquialatis; Pedicellis brevissimis; Rudi- 
Mém. VI. Sér. Sc. math. phys. et nat. T. P. 2de part. Sc. nat. 7 
