190 ILLUSTRATIONS OF INDIAN BOTANY- 



to distinguish the limits of one genns, Tirtuallj lost by being divided among 

 while I thus question the goodness of several of Professor Nees** genera, 



Remarks on Genera and Species. Under this head there Is considerable scope for 

 observation, and were such desirable, I think I could easily adduce several instances where it 

 will be found the genera are unnecessarily multiplied, and characters, which would have served 



two or more. But 

 genera, I must at the same 

 time admit that the diflBculty of defining the limits of genera in an order so exceedingly natural, 

 is always very great, and that had Nees never written another article on Botany than that 

 monograph, he would still have rendered such a service to the science of plants, as might well 

 suffice to immortalize his name as one of the brightest ornaments of the long list of those 

 who have contributed to advance our knowledge of the Vegetable Kingdom. 



He divides the order into 2 sub-orders and II tribes. These latter, unavoidably, sometimes 

 run into each other so as to render their limitation almost impossible; but as all of them have 

 Indian representatives, I shall endeavour, as far as possible, to aid those who may be desirous of 

 studying the order in recognizing them, by giving analized figures of at least one genus of each; 

 and I may here mention that upwards of 100 species are figured in my Icones, for the most 

 part accompanied with copious analyses of the parts of fructification. 



The following is Professor Nees' Conspectus of the tribes. 



Sub-order Akechmatacanthe.e. 



Seed nol supported on retinacula. 



Tribe I. Thcnbergikj:. Seeds few, in a thick capsule: attached to a cup-shaped process of the placenta in 



place of to a retinaculum, i: x- r r 



Tribe IL Nelso5ie^, Capsule many -seeded. 



Sub-order Echmatacanthe.e. 



Seeds supported on hooked processes (retinacula). 



^!!h III L-l V ^^ V^ >^ v-b n * m 4**« WML M^ I P^ 1 f^A ^^ t ft * 



funic ulus 



Tribe in HrGROPHiLE^. Calyx 5-cleft. CoroUa ringent. Stamens 4, didynamous, rarely only 2 fertile : ceUs 

 rr •», ?i> D ^^^^^^ parallel. Capsule nanow, many-seeded from the base. ^ j j 



Tribe IV. RuELLiEiE. Calyx 5-cleft. Corolla sub-regular, scarcely two-lipped, tubular, funnel-shaped or sub- 



^?.^^L li .^^^^'^"s 4, didynamous, one pair often much shorter, sometimes 2 by abortion: cells of 

 anthers parallel. Capsule 2-4- or many-seeded, usually contracted at the base. Flowers axillary, typically 



Trih« V^T? ' " ^°^*' Vl' ''^T'''' T"?"y bibracteolate, sometimes racemose ; racemes secund. ^' ^^ ^ 

 ^"•"^ ^L^t^"-^^'.^"^- 9*^r* 4-parted, koines unequal or 2-lipped. Corolla funnel-shaoed 



S:"anthS:rrS° T ^^f f the tube, d=mous, ^^^ very sh.t o\ wantLTby kb^rtitn^^^^^^ 

 Tribe VI Ac!Jthk/ r ? P^^'^A ^"'^^^"^ '* ^^'^ ^^^' ^*°^^^^ ^^iU^T^' cymulose, bibraJteolate secund. 



nimbus anther; 1 ..£f' ^'^ '/^™f ? ^^l^"^^* ^"'''^'^ I'^PP^''' ^^^e cartilaginous. Stamens 4, didy- 

 TriUVlTXLErlNDL. ?^lvtT'f^^^ Flowers spicate bracteate\nd bracteolate. 



buliform S^mentd .flf^^''V'''F^^\ ^?/°"^ ^"^''^^^^ «' ^^"g^t' «' somewhat regular, infundi- 

 ^ middir FforrrsVidTr^ctX'^n±SLJS^^^^ •^^"^^- ^^^^^^ ^^^^^^ ^^^ ^« ^' -' - - ^^^ 



Sr"ila^bMare?r''r;n.enl^'%rf ^^ deeply 5-cleft regular, the dorsal lobe sometimes smaller or wanting. 



2-ceLd • ce Is oara ef or ;.n.^^ '?'"^'^ '^ ^^' ^"'^ °^ ^^^ *"b«' either 4, didynamous, or 2 ; anthe?^ 



•commessed LS^ ",'^1'^ ^* *^« base, sometimes 1-celled, clpsule narrow, 



T^reTortLi atd b^l't'eL^Vario'uf "'''' '''^" ^^°^^" ^^"^^^^' '^''^^ ^ -^---^^^' ^P^"^^' 

 ^"'' lfam^ens'2"pSi inser^ted^'on'fhi'fn^' f^.^J'^".' ^^Iver-shaped, limb regular or sub-bilabiate, tube long. 



Tribe n^^-"- '^^- ^^:r:^.^:^t::^,:'^ p-^^^^^- ^^^^^^ ^^-^^ 



Iam;"s"3v1i sS'-rr^'f^"^"' ^-f -itf^- biUte VSndibuliform, w^ 

 soSSieri cefied ctoS^e withlTd'L''/"*^'! \''^^''^' ""« ^^^^ P«^^"«l «' "^e above the other; 

 elasticiTfrom the valvef R^^^^ f ^°"* ^^^ ™^^^'« ^^ Petition, sometimes separating with 



typicall/cyrose capilda Cvmes h.ci^S T '"'i °' ^^^"^I-Aowered, involucrate, peduncled. alillary, 

 at the apex ' ^ ^ ^ becommg, by evolution, racemose. Involucre lea^^es often two-valved 



'""'' anihtra^d^To" wll^^^^^^^^ f^ ^^^f -^e or ringent, stamens 2 ; lower cell of the 



base. Flowers axZy, JdUa^''™Scemo^^^^^^^^ ^^ "^^ '^"'^' "P^"^^^ ^^P^^^^^d, many-seeded from the 



cell of^fll'e auSlntSiteS Ij wooY wWrtoT'celf- ^^' ^^""K' ^^^-^' '^ ^"^^ "^ P^^^^^a said to have the lower 

 the anther. "^ ^°°^' whereas both cells are perfect, and the tuft of wool borne on the back of 



