asymmetric 



aurantiaceous 



asymmet'ric, asymmetrical (a, not, 

 aij/j,/j.erpos, symmetric) ; (1) irregular 

 in outline or shape ; (2) used of a 

 flower which cannot be divided in 

 any vertical plane into two similar 

 halves ; (3) dissimilarity of the 

 number of the members in calyx, 

 corolla or genitalia. 



asyngam'ic (a, not, vbv, together, 

 yd/j.os, marriage), used of plants 

 prevented from intercrossing by 

 their flowering at different times. 



At'avism (atavus, an ancestor), an- 

 cestral resemblance, reversion to 

 an older type. 



ataxinom'ic (a, not, TCICJ, order, 

 Xo'7os, discourse), teratologic, ab- 

 normal structures not represented 

 among plants in a normal con- 

 dition, as Fasciation, Chloranthy, 

 etc. 



a'ter (Lat.), pure, lustreless black ; 

 in composition, atro-. 



athal'amous (a, without, edXanos, 

 bride-chamber), said of Lichens 

 without apothecia on their thallus. 



athall'ine (a, without, 0aXXos, young 

 shoot), without thallus. 



Ath'era (d0ty>,-<?/>os, beard of corn), 

 in Greek compounds = awn or stiff 

 bristle. 



Atlantic type of Distribution, 

 Watson's term for British plants 

 which occur most frequently to- 

 wards the west of Great Britain. 



At'om (a, not, T-l/uw, I cut), de- 

 fined by Nageli as the ultimate 

 particle of a chemical element ; in 

 botanic parlance it means the 

 smallest divisable portion of any 

 substance. 



Atomogyn'ia (drtytds, cannot be cut, 

 yvvrj, woman), the elder Richard's 

 name for the ANGIOSPERMIA of 

 Linnaeus. 



Atracten'chyma t (&TPO.KTOS, a spindle, 

 yX u A"*> t nat poured in), prosen- 

 chyma, tissue of fusiform cells. 



atramenta'rius (atramentum, inky 

 fluid), inky ; black. 



atra'tus (Lat.), garbed in black ; 

 blackened, as in some species of 

 ) the apex of the glumes 



being darkened ; atric'olor (color, 

 colour), inky-black. 



at'ropal, preferably at'ropous (a, not, 

 rpowT), a turn), a synonym of OR- 

 THOTROPOUS ; applied to the ovule. 



At'rophy (a, without, T/JO^TJ, nourish- 

 ment), wasting away, abortion or 

 degeneration of organs ; Atrophy'- 

 tes (<f>vTov, a plant), those Fungi 

 which cause atrophy of important 

 organs of the host-plant. 



At'ropine, a poisonous alkaloid ob- 

 tained from Atropa Belladonna, 

 Linn. 



atro-purpu'reus (Lat.), black-purple, 

 the colour of Sweet Scabious, 

 Scabiosa atropurpurea, Linn.; <~ 

 -violaceus (Lat. ), very dark violet ; 

 ~ -virens, ~ -viridis (Lat. ), dark or 

 blackish green. 



atten'uate, attenua'tus (Lat. thinned), 

 narrowed, tapered. 



Att'ire, Grew's term for stamens and 

 pistils. 



Attraction-spheres, the same as At- 

 trac'tive-spheres, CENTROSPHERES, 

 or Tinoleucites. 



a'tus, a suffix indicating the presence 

 of an organ, thus : foli-atus, having 

 leaves. 



auc'tus (Lat. increased) ; (1) enlarged 

 after flowering, accrescent; (2) 

 augmented by an addition. 



Aug'ment-Cells, a modification of an 

 auxospore in Diatoms, after divi- 

 sion becoming transformed into 

 daughter-cells, and the starting- 

 points of new generations; Aug- 

 menta'tion, increase beyond the 

 normal number of parts. 



Aulae'um J (Lat., a curtain), used 

 occasionally for COROLLA by Lin- 

 naeus. 



Aulog'amae (atfXos, a tube, ydfj-os, mar- 

 riage), employed by Ardissone for 

 Muscineae. 



Aul'ophyte (aflXrj, abode, <j>vrov, a 

 plant), one plant living in the 

 cavity of another for shelter 

 only, not parasitic ; the German 

 is "Raumparasit." 



aurautia'ceous, auran'tiacus, auran'- 

 tins (Lat.), orange-coloured* 



