TYPE IG. GRAINS COMPOUND, MANY COMPONENTS. 281 



Danthmia provindalis DC. {Graminaccic.) Dry endosperm. — Comiioiiiul Rrtiins siihcriciil to olon- 

 gatecl-oval, sometimes irregular; rtiticulated-granular; size about 38^*. Separatod-graius 

 usually polyhedral; the larger ones with a small cavity; size 2 to 7,u. 



Danthonia koestlini Hoehst. (Graminacew.) Dry endosperm. — Separated-grains, size 1.5 to 5 and 6//; 

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

 grains observed; round or oval, frequently angular; size about 20ix. 



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

 polyhedral: size 2 to 8 anil 10^; the larger ones with a small central cavity and often with 

 single radial fissxu-es. Only a few compound grains of i)olyhedral foini can iio.sitively Ix; 

 distinguished. 



Triodia decumbens Beauv.; Danthonia decumhens DC. (Graminacece.) Dry endosperm. — Comjiound 

 grains rounded-angular or polyhedral; size about 20 and 2.5yu. Separated-grains polyhedral; 

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



Poa nemoralis Liim. {Graminaeece.) Dry endosperm. — Compound grains spherical or oval (not at all 

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

 polyhedi-al, frequently more or less distinctly compressed, without a cavity; size 2 to 8/x. 



Eragrostis abyssinica Link. (GraminacecE.) Dry endosperm. — The compound grains have Ijecome 

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

 to 500 and more components; size 33|U. Separated-grains polyhedral with acute margins 

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



Brizopyrum siculum Link.; Festuca xinioloides Kunth. {Graminacece.) Dry endosperm. — Compound 

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

 size about IGyu. Separated-grains round or rounded-angular; size about 1 to 2 or rarely 3/.(. 



Brizopyrum acutijlorum Nees. {Graminacew.) Dry endosperm. — Separated-gTains polj^iedral, and 

 have a cavity; size 2 to In. Only very few compound grains are observed. 



Briza triloba Nees.; Calotheca triloba Beauv.; Chascolylrmn triloba Nees. {GraminacecB.) 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/x. Separated-grains round or angular; size 1.5 to An. 



Briza geniculata Thumb. {Graminacece.) Dry endosperm. — Separated-grains rounded or angular; 

 size 2 to 7m; nearly all the compound grains have fallen apart. 



Glyceria nervata Trin.; Glyceria michauxii Kunth. {Graminacew.) Dry endosperm. — Separated- 

 grains polyhedral, usuallj' with acute margins and angles; occasionally with pressin-e facets; 

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

 or oval; size about 30|U. 



Glyceria distans Mert. & Koch. ; Festuca thalassica Kunth. {Graminacece.) Dry endosperm. — Comjiomid 

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

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



Glyceria mariiima Mert. and Koch. ; Festuca thalassica Kunth. {Graminacew.) Dry endosperm. — Com- 

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

 25/x. Separated-grains usually polyheilral, the larger ones have a cavity; size 2 to 7/i. 



Catabrosa aquatica Beauv.; Glyceria aquatica Presl. {Graminacew.) Dry endosperm. — Conii)Ound 

 grains round to oblong and high cone-shaped, reticulated-gi-anular; size about 28/1. Sepa- 

 rated-grains, size 1.5 to 4/1 ; the smaller ones round, the larger ones angular. 



Lophochlwna californica Nees. {Graminacew.) Dry endosperm. — Separated-grains size 1.7 to 5 

 and 6/i; the smaller ones somewhat roimded-angular, larger ones polyhedral and with a 

 cavity. Compound grains distinctly observed within the cells, but only a few are founil 

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

 less angular as the result of pressure; size about 19/i. 



Lophochlwna obtusiflora Trin. {Graminacew.) Dry endcsperm. — Separated-grains polyhedral; usu- 

 ally with a consijicuous nK)re or less angular cavity; many also have radial fissures. No free 

 compound gi'ains are ol)served; polyhethal when found in the cells; size about IG to 21/i. 



Melica ciliata Linn. {Graminacew.) 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 40/i. Separated-grains polyhedral, usually with acute 

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



