TYPE 10. GRAINS COMPOUND, MANY COMPONENTS. 281 



Danlhonia pwrincialis T>C. (Craminacca;.) Dr;/ endosperm. Compound grains spherical to cIoti- 

 gated-oval, sonii'timcs irronnilar; rcticulated-graimlar; size about '38ix. Separated-grains 

 usually polyhedral; the larger one.s with a small cavity; size 2 to l/x. 



Danthonia koesllini Hochst. (Graminacece.) Dry endosperm. Separated-grains, size 1.5 to 5 and 6n; 

 the smaller ones round, the larger ones jiulyhedral and with a central cavity. Few compound 

 grains observed; rouiul or oval, frequentlj' angular; size about 20(U. 



Uralepis aristulata Nutt. {Graminacece.) Dry endosperm. Separated-grains rounded angular to 

 polyhedral: size 2 to 8 and lO/i; the larger ones with a small central cavity and often ^\^th 

 single radial fissures. Only a few comi)ountl grains of polyhedral form can positively be 

 distinguished. 



Triodia decumbens Beauv.; Danthonia deciimbens DC. {Graminacece.) Dry endosperm.- Compound 

 grains rounded-angular or polyhedral; size about 20 and 25yu. Separated-gi-ains polyhedral; 

 the large ones have a small cavity, also frequently radial fissures; size 2.5 to 8/i. 



Poa nemoralis Linn. {Graminacece.) Dry endosperm. Compound grains spherical or oval (not at all 

 angular), consisting of about 1000 components; size about 30 to 36yu. Separated-grains usually 

 polyhechal, frequently more or less distinctly compressed, without a cavity; size 2 to 8/i. 



Eragrostis abyssinica Linlt. {Graminacew.) Dry endosperm. The compound grains have become 

 polyhedral as the result of pressure, mostly with acute margins and angles; consisting of 20 

 to 500 and more components; size 33/n. Separated-grains polyhechal with acute margins 

 and angles, rarely with a small central cavity; size 2 to 12^. 



Brizopyrum siculum Link.; Fesluca unioloides Kunth. {Graminacece.) Dry endosperm. Compound 

 grains almost rounded-oval, oblong, frequently irregular, homogeneous or finely granulated; 

 size about 16/u. Separated-grains round or rounded-angular; size about 1 to 2 or rarely 3/i. 



Brizopyrum acutiflorum Nees. {Graminacew.) Dry endosperm. Separated-grains polyhedral, and 

 have a cavitj'; size 2 to 7yu. Only very few compound grains are observed. 



Briza triloba Nees.; Calotheca triloba Beauv.; Chascolytrmn triloba Nees. {Graminacece.) Dry endo- 

 sperm. Compound grains spherical or oval-spherical, frequently somewhat angular, finely 

 reticulated or reticulated-granular, sometimes almost homogeneous, consisting of 4 to 400 

 components; size about 16;u. Separated-grains round or angular; size L5 to 4/i. 



Briza geniculata Thumb. {Graminacece.) Dry endosperm. Separated-gi-ains rounded or angular; 

 size 2 to In] nearly all the compound gi-ains have fallen apart. 



Glyceria nervata Trin.; Glycerin michauxii Kunth. {Graminacece.) Dry endosperm. Separated- 

 grains polyhedral, usually with acute margins and angles; occasionally with pressvu-e facets; 

 the larger ones with a small central cavity; size 2 to 7 and 9m. Compound grains few, round 

 or oval; size about 30/u. 



Glyceria distans Mert. & Koch.; Festucathalassica Kunth. {Graminacece.) Dry endosperm. Compound 

 grains spherical or oval, reticulated-granular or with distinct lines of separation; size about 

 28^. Separated-grains 2 to 7^; the majority are polyhedral, the larger ones have a cavity. 



Glyceria maritima Mert. and Koch. ; Festuca thalassica Kunth. {Graminacece.) Dry endosperm. Com- 

 pound grains rounded or oval; finely reticulated or with distinct separating lines; size about 

 25^. Separated-grains usually polyhedral, the larger ones have a cavity; size 2 to 7,u. 



Catabrosa aquatica Beauv.; Ghjceria aqucdica Presl. {Graminacea.) Dry endosperm. Compound 

 grains round to oblong and high cone-shaped, reticulated-granular; size about 28yu. Sepa- 

 rated-grains, size L5 to 4^; the smaller ones round, the larger ones angular. 



Lophochlcena californica Nees. {Graminacece.) Dry endosperm. Separated-grains size 1.7 to 5 

 and 6m; the smaller ones somewhat rounded-angular, larger ones polj'hedral and ^vith a 

 cavity. Compound grains distinctly observed \\'ithin the cells, but only a few are found 

 free (since they fall ajmrt as they emerge from the cells). They are rounded or oval, more or 

 less angular as the result of pressm-e; size about lO/i. 



LophocUwna obtusiflora Trin. {Graminacece.) Dry endcsperm. Separated-grains polyhedral; usu- 

 ally with a consi)icuous more or less angular cavity; many also have radial fissures. No free 

 compound grains are observed; ])olyhe(hal when found in the cells; size about 16 to 21m- 



Melica ciliata Linn. {Graminacece.) Dry endosperm. Compound grains polyhedral by means of 

 pressure, sometimes with acute, sometimes rounded angles and margins, consisting of 4 to 

 over 500 components; size about 40m. Separated-grains polyhedral, usually with acute 

 margin and angles; the larger ones frequently with a small central cavity; size 2 to 15m. 



