Eragrostinae

Gramineae

Most of the subfamily plants are annual herbs. spikelet It is usually flat on both sides, containing one to many small flowers, and the flowers are rare. junction Caryopsis 。

It is commonly found on the roadside and deserted grassland, and mostly mixed in dry land crops or cotton fields. Some species are high-quality forage and water and soil conservation plants. It can be used for ribbon and mirror configuration.

Chinese scientific name: Eragrostinae
Latin name: Eragrostoideae PILGER
circles: Flora

door: Angiosperma
Outline: Monocotyledons
order: Poales
section: Gramineae

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Plant characteristics

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Eragrostidaceae (5 sheets)

spikelet It is usually compressed on both sides and contains one to many florets. The terminal florets are often undeveloped and disjointed on the glume; Squama integument 2. It is thick, with flat top and veins. Leaf anatomy and leaves Epidermal tissue Often speedwell Chromosomes are small, x=5，6，9，10，11，12， Most species are 9 or 10. Embryos are often speedwell Chlorioid Era - grostoid: P+PF, embryo length is about Caryopsis 1/3-5/6 of. Sapling Mesocotyl Constant extension Adventitious root^[1] 。

Distribution of type genera

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Eragrostinae (5 sheets)

Type genus: Eragrostis Eragrostis Wolf

It is distributed in tropical to warm and cold regions all over the world, but most of them are tropical and subtropical. There are 10 nationalities and 32 genera in China.

Original search number	describe	Chinese name	Latin name
one	Lemma With 7-9 veins or to many veins.	-	-
two	Lemma with 9 to many pinnate awns.	Guanmangcao	Trib. Pappophoreae kunth
two	Lemma Awnless; spikelet Arranged near without handle inflorescence The side of the branch.	Zhangmao nationality	Trib. Aeluropodeae Nevski ex Bor
one	Lemma with veins 1-5.	-	-
three	spikelet It contains 2 to several bisexual florets. Although there is only one bisexual floret in some species, it is still accompanied by degenerated florets, and the spikelets are not oval.	-	-
four	spikelet Usually the two sides of the pole are flattened and not inflorescence Clusters are densely formed on the main axis, and there is no glume below Bract Accomplished Involucre 。	Thrush tribe	Trib. Eragrostideae Stapf
four	Spikelets sessile or subsessile, densely clustered on the main axis of the inflorescence, with 3 to many glumes in each cluster holder Bract Accomplished Involucre 。	Hyperbracteae	Trib. Elytrophoreae H. Jacq. -Fel.
three	spikelet There is only one bisexual floret. If there are two bisexual florets, the spikelet is ovoid.	-	-
five	The first glume of spikelet is small or degenerated and does not exist, and the spikelet is usually 2-5 on the inflorescence axis Fascicle 。	Zoysiaceae	Trib. Zoysieae Miq.
five	spikelet Both glumes of inflorescence upper Fascicle 。	-	-
six	Spikelets usually awned.	-	-
seven	spikelet Usually arranged on one side of the cob to form a spike or spike raceme , often from inflorescence Regrouping into finger, aggregate or Panicle 。	Sambucus	Trib. Chlorideae Agardh
seven	spikelet Not arranged on one side of the cob.	-	-
eight	Spikelet formation Panicle ； Awnless glume; Lemma With 3 veins, extending into 3 awns.	Samanthus	Trib. Aristideae Hubb.
eight	spikelet Often arranged into a single terminal spike raceme ； Glumes with 1 vein, extending into slender awns; Lemma Transparent membranous, awnless.	Maogen nationality	Trib. Perotideae Hubb.
six	Spikelets awnless, usually consisting of compressed or expanded Panicle 。	-	-
nine	Ligule Less than 5mm in length; Caryopsis After maturity, it does not expose the lemma.	Rattus	Trib. Sporoboleae Stapf
nine	Ligule 5-15 (25) mm long; Caryopsis Expose the lemma after heating.	Phyllanthus	Trib. Phaenospermeae Roshev.