TYPE 16. GRAINS COMPOUND, MANY COMPONENTS. 291 



Adenogramma gah'oides Frenzl. (Ficmdew or Mesembryacece.) Dry endosperm. Separated-grains 

 polyhedral. Size 3 to 14ju. Compound grains of 2 to 10 components, and fragments 

 of more complex grains, are found, besides some simple grains, rounded or oval. Size 

 about l.V. 



Corrigiola littoralis Linn. (Illecchracp(r.) Dry endosperm. Compound grains spherical, oval, low 

 cone-shaped; three-fifths to as thick as long, granular, consisting of 10 to over 5000 compo- 

 nents. Size about 30;u. Soparated-grains round to polyhedral. Size 1.5 to 4 and 5,u. 



Hcrniaria glabra Linn. {Illecebracece.) Dry endosperm. Separated-grains polyhedral with acut 

 sharp margins and angles (only outlined by pressure facets), the larger ones with a small 

 central cavity. Size 2 to llyu. Compound grains occur; they appear to be polyhedral, and 

 at all events contain many more than 100 components. 



lUeccbrum vertidllatum Linn. {lUecebraceoe.) Dry endosperm. Separated-grains polyhedral, usually 

 irregular; very strongly compressed. Breadth 2 to 14^, thickness 1 to 2iJ.. Only a few com- 

 pound grains occur, which are flattened. 



Anychia dichotoma Michx. (Illecebracece.) Dry endosperm. Separated-grains rounded or angular. 

 Size 1 to 4/i. Few compound grains are present. 



Telephium imperati Linn. (Ficaidece.) Dry endosperm. Separated-grains rounded-angular or 

 frequently polyhedral. Size 1 to i/x. Compound grains crowded in the cells, polyhedral (a 

 few of the compound grains are free), reticulated-granular, containing over 2000 compo- 

 nents. Size about 28^. 



Polycarpcea teneriffcB Lam. iCaryophyllacece.) Dry endosperm. Separated-grains polyhedral with 

 acute angles, mostly irregular and scale-like, very strongly compressed, homogeneous. 

 Breadth 2 to 9jii, thickness about V. No compound grains are found. 



Lepigonum medium Wahlbg. ; Spergularia salina Presl. {Caryophyllacece.) Dry endosperm. Sep- 

 arated-grains rounded-angular, acute-polyhedral, frequently irregular and scale-like, very 

 strongly compressed. Breadth 2.5 to 12 and 16;u, thickness 1/x. No compound grains. 



Spergula arvensis Linn. (Caryophyllacece.) Dry endosperm. Compound grains oval-spherical to 

 oblong; occasionally somewhat angular, and frequently irregular; one-half to almost as thick 

 as long; granular to very nearly homogeneous, consisting of 20 to over 4000 components. 

 Size about 28/i. Separated-grains rounded or rounded-angular; usually rather strongly 

 compressed. Breadth 1 to 3^, thickness l^i. 



Drymaria cordata Willd. (Filicinecc.) Dry endosperm. Separated-grains circular or rounded-angular, 

 very strongly compressed, homogeneous. Breadth 3 to 20m, thickness 1 to 1.5ju. No com- 

 pound grains could be seen. 



Scleranthus perennis Linn. (Illecebracece.) Dry endosperm. Separated-grains rounded-angular or 

 polyhedral, very strongly compressed. Breadth 2 to 15 and 20^, thickness Ifi or a little 

 more. No compound grains. 



Sagina apetala Linn. (Caryophyllacece.) Dry endosperm. Separated-grains round or rounded- 

 angular. Size 1 to 2^. No compound grains present. 



Bufonia annua DC. (Caryophyllacew.) Dry endosperm. -Compound grains spherical or oval, finely 

 granular. Size about 16/i. Separated-grains round. Size 0.5 to 1.5/i. 



Arenaria holosteoides; Lepyrodiclis holosteoides Fenzl. (Caryophyllacece.) Dry endosperm. Sep- 

 arated-grains rounded-angular, or more often with 5 to 6 acute angles, most of them com- 

 pressed to about half their width, the larger ones have a small central cavity and occasionally 

 also some (1 to 3) short radial fissiu-es. Size 2.5 to 11^. A few compound grains occur round 

 or oval, consisting of 10 to 100 components. Size about 16^- 



Arenaria graminifolia Schrad. (Caryophyllacece.) Dry endosperm. Compound grains oval, one- 

 half to two-thirds as broad as long, compressed to one-third of their width, occasionally 

 almost as thick as broad, consisting of over 100 components. Size about 40^. Separated- 

 grains rounded to acute angular, occasionally irregular and scale-like, very strongly com- 

 pressed. Size 3 to 13ju, thickness hardly over Ifi. 



Arenaria grandiflora Linn. (Caryophijllacece.) Dry endosperm. Separated-grains (completely filling 

 the cells) angular, sometimes with a cavity. Size 3 to 15^. No compoimd grains are present. 



Arenaria globulosa Labil. (Caryophyllacece.) Dry endosperm. Separated-grains rounded. Size 

 1 to 3/x. Only a very few compound grains occur. 



