asexual 



Astrospheres 



tic ((TTjTn-iKos, putrefying), not 

 liable to become rotten ; asex'ual 

 (sexualis, pertaining to sex),destitute 

 of male or female organs, neuter ; 

 ~ Generation, in alternation, that 

 generation which produces spores 

 asexualtyj but is itself the product 

 of a sexual act ; thus, in Ferns, the 

 full-grown form is the asexual form 

 or sporophyte, the prothallus the 

 sexual form or gametophyte. 



Ash, the mineral residue of plants 

 after complete combustion. 



Asim'ina = ASSIMINUM. 



Aspax'agi (ao-irdpayos, asparagus), for- 

 merly used for TURIONES or suckers, 

 young shoots emerging from the 

 rootstock under ground, and at 

 first bearing scales only, as in As- 

 paragus ; Aspar'agin, a commonly 

 occurring amide, which was first 

 obtained from A sparagus officinalis, 

 Linn., hence its name; asparag'i- 

 nous, applied to plants whose young 

 shoots are eaten as asparagus. 



as'per (Lat. rough), as'perate, as'- 

 perous, rough with hairs or points. 



aspergilTifonn, aspergilliform'is (as- 

 pergillum, holy- water brush, forma, 

 shape), tufted, brush-shaped as the 

 stigmas of grasses; Aspergill'in, 

 pigment of the spores of Aspergillus 

 niger, Van Tiegh., now known as 

 Sterigmatocystis nigra, Sacc. 



asperifo'liate, asperifo'Uous (asper, 

 rough, folium, leaf), rough leaved, 

 as Borrago ojficinalis, Linn. ; 

 Asperity (asperitas), roughness. 



Asporomyce'tes (a, without, tnropa, a 

 seed, /-IUKT/S, fungus), Marchand's 

 name for Fungi imperfecti. 



as'plenoid (Asplenium, eTSos, re- 

 semblance), like the Fern genus, 

 Asplenium. 



asperm'ous (a, without, ffirtyfui, seed), 

 seedless. 



Assimila'tion, AssimUa'tio (assimulo, 

 I make like), the process by which 

 extraneous matter, crude food, is 

 converted into plant substance ; 

 constructive metabolism ; used 

 especially for the formation of 

 organic substance from carbon di- 



oxide and water by green plants 

 in sunlight. 



asp'erous (asper, rough), scabrous, 

 harsh to the touch. 



Assim'inum (Fr. Assiminier, a name 

 of Asimina triloba, Dun. ), Desvaux's 

 name for SYNCAB.PIUM. 



Associations, Plant; term proposed 

 to supersede Plant Formations or 

 Plant Societies ; Dan. Plantesam- 

 fund, Ger. Pflanzenverein. 



Assumen'ta (pi. of assumentum, a 

 patch), the valves of a siliqua. 



assur'gent, assur'gens (ad, to, surgo, I 

 rise), rising upward ; ascending. 



Astath'e i (aVra0T?5, unstable), ' ' a sub- 

 stance supposed by Hartig to lie 

 between the outer and inner lining 

 of a cell " (Lindley). 



Aste'ly (a, without, 0-7-17X17, pillar), 

 destitute of a stele, or axial 

 cylinder of tissue, cf. SCHIZOSTELY ; 

 adj. aste'lic. 



Ast'er (dffTTip, a star), used in composi- 

 tion for star-shaped structure as in 

 DIASTBB, etc. ; ast'eroid (eZSos, re- 

 semblance), (1) star-shaped ; (2) like 

 the genus, Aster, Tourn. 



ast'ichous, as'tichus (a, without, 

 o-Tixos, row, line), not arranged in 

 rows. 



astip'ulate (a, without, -f STIPULA) = 



EXSTIPULATE. 



Astig'matae (a, without, + STIGMA), 

 Van Tieghem's name for the 

 ARCHEGONIATAE ; cf. STIGMATAE. 



astom'atal (a, without, + STOMA), 

 wanting stomata ; ast'omous 

 ast'omus (<n-d//,a, mouth), not having 

 an orifice. 



Astrocen'ters (do-rr/p, a star, centrum, 

 centre), C. Macmillan's term for 

 the bodies variously known as 

 Attraction - spheres, Directive 

 spheres, Tinoleucites, etc. ; 

 Astroscle'reids (<rK\r)pos, hard) thick- 

 walled star-shaped cells occurring 

 in the leaves of Camellia, and fre- 

 quently in bark amongst the sur- 

 rounding parenchymatous cells 

 (Tschirch) ; Ast'rospheres (<r<f>aipa, 

 a sphere), Strasburger's term for 



ASTROCENTEBS. 



25 



