472 TRI ANDRIA-DIG YNIA.
trinervi, glabra, nitida, margine indexa , subciliata-
que . Corolla gluma bivalvis, albo-membranacea, hya-
lina ; valva exteriore oblonga, acuta, glabra, mutica,
margine inflexa, ciliata; valva interiore longe brevio-
re, lineari-angustissima, basi attenuata facile difflua,
glabra, apice integra , nervo carinali ex apice conti-
nuato in aristam articulatam, liberam, locusta duplo,
vel triplo longiorem, flavam, aut fulvam, scabriuscu-
lam, infra articulum contortam, crassiorem, supra ar-
ticulum attenuato-setaceam, arefactione refractam. Anthers
flavæ, vel flavo-purpurantes. Stili duo. Stigmata
plumosa, purpurea . Flos masculus . Pedicellus su-
stinens compressus, sericeo-barbatus , præsertim apice.
Calyx gluma bivalvis , chartacea , valvis æqualibus ,
acutis ; exteriore multinervi , glabra , vel nervis sca-
brida, præcipue in illis, qui marginem inflexum ap-
propinquant ; interiore angustiore , trinervi , glabra .
Gluma corollina univalvis, albo-membranacea, hyali-
na, calyce paulo brevior , oblonga , acuta , vel apice
erosula, margine inflexo ciliata . Stamina ut in flore
hermaphrodite.
Nil mirum, Linnæum non cognovisse hanc plantam, cum
in borealibus plagis non proveniat, quæ cum pluri-
mam habeat similitudinem cum Andropogone Isehoe-
mo L., sive cum Andropogone provinciali Lamk., quod
tantum extat in herbario Linnæano , facile intelligi-
mus, cur Linnaeus synonyma plant® nostræ traxerit
ad suam .
Hic autem monere juvat tyrones , me sæpe reperisse super
folia Andropogonis angustifolii ova cujusdam inse-
c ti, quod Entomologi dicunt Hemerobium Perla, quæ
caveant, ne sumant pro fungillo, aut pro parte pe-
culiaris graminis, ut olim contigit Bocconio, qui exhi-
buit plantam cum ovis istis in Mus. pi. p. 69. tab. 5g.
pro Gramine omnium niinimo loculis Lunariæ Grcecoe.
SORGHUM.
Pers. Syn. pi. 1. pag. 101. n. 180. Palis. Ess. d’ une
nouv. Agrost. p . iS i . n. 116. Trin. Fund. Agrost.
p . 188. n. 162. Link. Hort. reg. Berol. descript, ip.
244* n• i 23 .
TRI ANDRIA—DIGYNIA. 473
Holcus R. Brown. Prodr. p. 198.^ et edit. 2. tom. i.
pag. 5 4 . Goertn. De fruct. et sernin. tom. 2. pag. 2.
tab. 80.
Holci species Lin. Gen. p. 5 4 1 •
Flores polygami, monoeei. Locustæ unifloræ ; her-
maphrodita sessilis ; mascula solitaria , vel dup
le x , pedicellata. Flos hermaphroditus. C a ly x
gluma cartilaginea, bivalvis, mutica, valva ex teriore
apice tridentata. Gluma corollina inclu-
sa , membranaceo-hyalina, b ivalvis, valvis in-
æqualibus ; exteriore .majore , mutica , c ilia ta ;
interiore multo minore , apice bifida , mutica. ,
vel nervo carinali e sinu divisionis producto in
aristam articulatam , liberam , infra articulum
contortam, arefactione refractam. Stamina tria.
Stili duo . Stigmata plumosa . Caryopsis intus
niveo-farinacea, compresso-turgida, ovoidea, libera
intra glumas persistentes . Flos masculus
. C alyx gluma chartacea , bivalvis , valvis
subæqualibus, muticis, exteriore tridentata. Corolla
inclusa , membranaceo-hyalina , bivalvis,,
valvis subæqualibus , muticis , ciliatis . Stamina
tria,.
Habitus. Plantæ annus, vel perennes. Culmi pro-
ceri, crassi , intus fa r c ti. Folia la t a , arundina-
cea . lnflorescentia paniculata , ve l racemosa ,
sæpe senio colorata . Perisperma farinaceum ,
aptum ad pultem, vel panem agricolarum.
Observ. Quidquid Palisotius 1. c. dicat de summa
proximitate hujus generis cum præcedente, Sorghum
comprehendit plantas inter se apprime
affines , et omriino recedentes ab Andropogoni-
bus i illud autem optime sejungunt, et firmant
valva calycina exterior tridentata, calyx herma-
phroditi cartilagineus, corollæ arista vaga, caryo-
pis turgida, perispermate niveo-farinaceo farcta.
i . Sorghum halepense : perenne , radice repente ; fob is
latis, longe acuminato-setaceis ; panicula pyramidata,
laxa, erecto-patula , locustis oblongis, mucronulatis ;
flosculi hermaphroditi arista vaga.