Asphyxia 



Astif^iuitloae 



Asphyx'ia {a<r<pv^la, without a pulse), 

 in plants, insensibility brought on 

 by suspension of respiration due 

 to absence of oxygen (Dutrochet). 



Aspide'tum Ganong's term for a bog- 

 niarsh plant-association of Carex and 

 Aspidium, whence the name. 



ABpidia'ria, formerly the name of a 

 genus of fossils, now applied to a 

 lepidodendroid stem when the cortex 

 has been stripped oft" (Scott). 



Aspidosper'motype, a wind-dispersed 

 seed resembling the seed of Aspido- 

 spenna, circular in shape, with the 

 weight of the seed in the centre 

 (Dingier). 



asple'nioid, {elSos, resemblance), like 

 the Fern genus, Asplenium. 



Asporomyce'tes (a, without ; airopa, a 

 seed ; yut/KTjs, fungus), Marchaud's 

 name for Fungi imperfecti. 



Assimila'tion, Assimila'tio {assimulo, 

 I make like), the process by which 

 extraneous matter, crude food, is 

 converted into plant substance ; 

 constructive metabolism ; used espe- 

 cially for the formation of organic 

 substance from carbon dioxide and 

 water by green plants in sunlight ; 

 Assimila'ta, pi., the first-formed 

 products ; assim'ilative, conducing 

 to Assimilation ; -^ Fil^aments, 

 sterile hairs which grow intermixed 

 with the sporangia of such Algae as 

 Edoearpus. 



Aflsim^inum (Fr., Assiminier, a name 

 of Asimiim triloba, Dun.), Desvaux's 

 name for Syncarpium. 



Association (Plant); term proposed to 

 supersede Plant Formation or Plant 

 Society ; Dan. Plantesamfund, Ger. 

 Pflanzenverein ; Chief --■ , = stable 

 association ; Closed '^ , the ground 

 fully covered by plants ; Inter- 

 me'diate -^ , more or less covered ; 

 Mixed ~ , several species competing 

 for dominance ; O'pen --' , partly 

 covered with vegetation ; Pas'sage ^ , 

 leading from one to another ; Pro- 

 gres'sive '^ , open and intermediate, 

 tending towards stable ; Pure -^ , a 

 single species dominant ; Eetrogres'- 

 siv« ^ , a decaying stable-association ; 



37 



stable '-' , in a state of equilibrium, 

 but may degenerate ; Snbor'dinate 

 •^ , a progressive or retrogressive as- 

 sociation ; Snb'stitnte ~' , a secondary 

 formation (W. G. Smith) ; Tran- 

 sitional'-', in course of develop- 

 ment ; Unstable ~ , leading to an 

 intermediate association. 



Assnmen'ta (pi. of ussumenttim, a 

 patch), the valves of a siliqua. 



assor'gent, assur'gens {ad, to ; surgo, 

 I rise), rising upward ; ascend- 

 ing. 



Astath'e I (affrad^s, unstable), "a 

 substance supposed by Hartig to lie 

 between the outer and inner lining 

 of a cell " (Lindley) ; secondary 

 membrane (von Mohl). 



Aste'ly (a, without ; <Tri\\r), pillar), 

 destitute of a stel6, or axial cylinder 

 of tissue ; cf. Schizostely ; adj. 

 aste'lic. 



As'ter (io-T^p, a star), a stage in nu- 

 clear division ; the chromatin forms 

 rods over a great part of the fusi- 

 form nucleus, its poles being occupied 

 by fine achromatic filaments ; cf. 

 Dyaster. 



astera'ceous, allied to the group of 

 Compositae of which the genus Aster 

 is the type. 



aster'iate (Heinig) = asteroid. 



Asterid'ia, pi. (ocrr^p, a star, tStof = 

 diminutive), spinous or stellate 

 bodies occurring in the cells of 

 Conjugatae, possibly some parasitic 

 form (Archer) ; Asterosphae'ria, pi. - 

 {<r<paipa, a sphere), a synonym of 

 the same. 



As'terile {Aster, Tourn., -f ile), 

 Clements's term for a "Society" of 

 Aster ; ast'eroid (elSoy, resemblance), 

 (1) star-shaped ; (2) like the genus, 

 Ader, Tourn. 



ast'iohous, as'tichtis X (a, without : 

 (rrixos, row, line), not arranged in 

 rows. 



Astig'matae (o, without, -f Stigma), 

 Van Tieghem's name for the Arche- 

 ooNiATAE ; cf. Stiomatae ; Astig- 

 mat'icae, Knuth's term for wind- 

 fertilized plants which do not 

 possess stigmas, such as Gymno- 



