TYPE 10. GKAINR SIMPLE, STRUCTURE OBSCURE. 249 



Armeria alpina WilUl., v;ir. angustifolia. {Pluiiibaginaccct.) Dnj seed. Grains rounded or oval, 

 bluntly angular or sharply polyhedral; two-fifths to as thick as long; usually with a rounded 

 or oblong cavity and frequently with radial fissures. Size about 8 to 21;u. 



Statics limonium Linn. {I'lumhaginacecc) Dry seed endosperm. Grains rounded or oval, blunt- 

 angular, or polyhedral, rarely with sharp edges and angles; frequently with a cavity or slit. 

 Size about 3 to 18/i. 



Statice elata Fisch. {Flumbaginacece.) Dry seed. Grains rounded to oblong, angular, or sharply 

 polyhedral; one-third to as thick as long; either a rounded or an oblong cavity, or even a 

 longitudinal slit, is frequently observed, from which fissures occasionally radiate. Many 

 grains are slightly shrunken. Size about 27 to 32yu. 



Goniolimon exirnium Boiss. (Plumhaginacece.) Dry seed endosperm. Grains isodiametric to t^vice 

 as long as thick, polyhedral ynt\\ sharp angles and edges; frcciuently they have a central 

 cavity; without either fissures or lamellae. Size about 28/i. Cells are thin-walled and filled 

 with starch. 



Plumbago juicrantha Ledeb. (Plumbaginacece.) Dry seed endosperm. Grains sharply polyhedral, 

 with a small or a large cavity. Size about 8 to lO/i. 



Campanula sp. {Campamdacece.) Fresh unripe seed endosperm. Grains rounded-oval or rounded- 

 angidar. Size about 7(U. Also some separated-grains are present. Seeds very young, and 

 contain considerable starch. 



Menodora sp. (Oleacece.) Dry seed tegment. Grains rounded, rounded-angular, or polyhedral; with 

 a large or a small cavity. Isolated compound grains are also present. 



Erycibe paniculata Roxb. {Leguminosce.) Dry cotyledons. Grains spherical or rounded-oval, occa- 

 sionally somewhat angular. Size about Tm- 



Eutoca viscida Benth. {Euphorbiacece.) Dry seeds. Grains spherical; a small central cavity is found 

 in the larger ones. Size about 6 to 8;u. A great deal of oil is found, and most of the seeds 

 contain onlj^ oil. Starch in small quantities is probably present in the seed, which is not 

 fully ripe. 



Phacelia congesta Hook. {Hydrophyllacece.) Dry seed endosperm. Grains as in the preceding species. 



Digitalis lutea Linn. (Scrophidariacece.) Fresh, imripe fruit, placenta, and funiculus. Grains roimded, 

 or oval, and frequently angular. Size about lOix. Also compound grains of 2 to 8 equal com- 

 ponents are observed. Starch plentiful; wanting in the ovules and seeds. 



Verbascuni schraderi Mey. (ScrophidariacecB.) Fresh placenta of unripe fruit. Grains angidar, 

 here probably mostly separated-grains. Size about 6 to Six. Starch very plentiful. 



Verbascum schraderi Mey. {Scrophidariacece). Fresh, unripe seed-coats. Grains rounded or oval, 

 usually angular. Size about 5^. Starch rather plentiful. 



Thunbergia fragrans Roxb. {Acanthacece.) Dry seeds. Grains spherical, oval, or somewhat irregular. 

 Size about lOju. Many seem to be compound. Some show colorless appendages which are 

 not stained after treatment with iodine. The grains are poor in starch, but rich in oil; 

 the former may disappear at maturity. 



Delphinum ajacis Linn. (Ranunculacece.) Fresh unripe seed coats. Grains rounded, or angular 

 with round angles. Size about 8yu. Starch rather plentiful. 



Chelidonium majus Limi. {Papaveracece.) Fresh seed coat. Grains rounded. Size about 7 to 9;u. 

 They are stained brown when treated with iodine. 



Chelidonium majus Linn. {Papaveracece. ) Fresh unripe seed coat. Grains rounded. Size 5 to 6^- 

 They are stained brown or violet when treated with iodine. 



Brassica napus Limi. {Brassicaceoe; Cruciferce.) Fresh unripe seeds. Grains (in the embryo) rounded 

 or oval, frequently somewhat angular; some are evidently separated-grains. Size about 

 5/u. Compound and separated-grains predominate in the seed coats (see type 14). Starch 

 is plentiful in the perisperm, especially rich in the embryo, and mostly found in the cells 

 of the seed-coats with the exception of the outermost layer, the walls of which soon thicken. 

 The perisperm later entirelj- disappears, the seed-coats and the embryo lose their starch, 

 since in the former the membranes are thickened and in the latter starch is replaced by oil. 

 As the green seeds turn yellow the solution of the staixh takes place; in the brownish-yellow 

 seeds it has entirely disappeared. In the earliest stage the embryo contains merely oil ; when it 

 has entirely reijlaced the perisperm and thus completely filled up the cavity within the seed 

 coats both oil ami starch are found, while in the latest stages oil alone is again observed. 



