442 GENTIANAGEzE MICROCALA 



> GREEK >LXII GENTIANACEJS .Dumort. Anal. .-Earn. .20. 



Smooth herbs -with bitter colorless juice, opposite, rarely 

 alternate or verticillate, leaves without stipules, and perfect 

 regular flowers. Calyx mostly 4-*12-lobed or 4oothed, often 

 marcescent. Corolla gamopeialous, 4-12-lobed .or -toothed, 

 convolute or imbricated and usually twisted in "the. bud, often 

 niarceseent. Stamens as many as lobes of the corolla,. 'alter- 

 nate with the'm, ' inserted, on ' jits tuUe. the,j2 -Celled anth$i's 

 pjleafng JpMgit^(lin4lly '; ''. sOvary^f ree^ ftmex^elled -J rarely 2-eeU ed ; 

 with . two' j>arietal placenty};^^' the whole pariet^s i>vuliferous. 

 Htjle --single, with ustially : two-loBed -Qr v two-lamellate stigma. 

 Capsule dehiscent through ,th,e plaeentse, See&^^denni^eiy 

 numerous, '-/rarely 'tew. .common,ly small, anatropoiis, witli *a 

 minute qmbryo i in fleshy albumen . 



SUBOKDER i GENTIANE^E .Leaves , always simp-le' and < eiitirf . 

 Lobes of. the tioroll-a never vvalvatej in the (bud. ;' 



Style filiform, usually deciduous from the capsule. 



Calyx 4-tootlied aud 4-augled: anthers coi-date-ovate and 

 unchaiiged in .a^e. 



2 Erythrisa ( Calyx ^rpartexl, or soinetimes 4-parted : anthers oblong oy 



linear, twisting spirally in 1 or 2 turns in age. 



* -* Style short or subulate and persistent, or none. 

 -*- -.Corolla without nectariferous pits or large glands. 



3 ^treiiliaaia .Corolla fujrn-elform, campaniilate or.salverform : seeds very 



numerous ami small. 



*- -*- Corolla with, 1 or 2, nectariferous pits or s-pots, or an atlna(e : 

 scale to each lobe. 



4 Swertia Corolla rotate, usualFy 5-parted: capsule ovate: seeds com- 



paratively large. 



5 Frasera Corolla rotate, 4-parted: seeds comparatively few and large. 



.SUBORDER ii ME-NYANTHE^E Leaves often crenate or trifolio- 

 late, all alternate .and petioled. Corolla induplicate-rvalvate in 

 the bud. 



6 'Menyiuithes Corolla somewhat funnelform or campanulate, 5-cleft. 



Suborder 1, Genlianese DC. Prodr. ix 38. Leaves always sim- 

 ple -and .-entire, sessile, never alternate except in Swertia. Corolla 

 never yalvate in the bud. 



1 MIGROC ALA Link & Hoffm. Fl. Port, i, 359. 



Little annuals with opposite . entire sessile leaves' and yellow 

 fiawefe. Calyx .4-toot:hed and 4rangled. ; Corolla shO'rt- 

 bearing the 4 short stariaeps in dts throat : .anthers c 

 unchanged iiL-age. Style 'filiform, deciduous : stigma as if ccim- 

 pressed-capitate^but oi ! 2^fan-shaped lobes that are at first co H- 

 nivent, but af, length separate. Seeds numerous, with close and 

 foveolate coat. 



