278 XXXVIII. GERANIACE/E. [.Balsaminec. 
20. ztydrocera, Blume, Bijdr. 241, (Tytonia, G. Don, Gen. Syst. i. 749.)— Flores irre- 
gulares. Sepala 5, colorata, imbricata, lateralia exteriora plana, posticum in calear cavum 
breve productum. Petala 5, anticum exterius maximum concavum.  Glandule disci OQ. 
Stamina 5, filamentis brevibus complanatis ; antherz circa pistillum leviter cohsrentes, lo- 
culis introrsum dehiscentibus. Ovarium 5-loculare ; stigmata 5 , sessilia ; ovula in loculis 2-3. 
Drupa baccata, indehiscens, putamine 5-sulco apice truncato osseo 5-loculari. Semina in 
loculis solitaria, curvata, angulato-corrugata, exalbuminosa; cotyledones plano-convex:e, 
crassiuscule ; radicula brevis, supera.—Herba aquatica v. nint Folia alterna, an- 
gusta. Pedunculi axillares, breves, 1—3-flori. 
. Species l, Asiz tropiez incola. Walp. Hep. i. 476 (excl. H. Poesias; Hook. f. et 
Thoms. in Journ. Linn. Soc. iv. 156. 
Onpo XXXIX. RUTACEZ. 
Endl Gen. 1159; Lindl Veg. Kingd. 469. JDioswEx, Endl Gen. 1149. ZawrHOxyrLEx, Endl. 
Gen. 1145; Lindl. Veg. Kingd. 472. AuvmawrIACExX, Endl. Gen. 1043; Lindl. Veg. Kingd. 457; 
Oliver, in Journ. Linn. Soc. Bot. v. Suppl. II, 
Flores swpissime hermaphroditi, in Cusparieis irregulares. Sepala 4-5, utplurimum 
imbricata, libera v. connata. Petala hypogyna v. perigyna, sepalis isomera, late imbricata, 
rarius valvata, in Cusparieis JBoronieisque paucis coalita. Stamina basi v. rarius mar- 
gini tori inserta, petalis isomera v. duplo pluria, rarissime pauciora v. oo, alia interdum 
ananthera, libera v. rarius inter se v. cum petalis coalita; filamenta sepissime esquamnta. 
Antherc versatiles v. dorso cum apice filamenti adnate ; loculi 2, introrsum dehiscentes; 
connectivum apice szepe glandulosum.  JDiscus'inter stamina et ovarium situs, rarissime 0, 
sepius annularis v. pulvinaris, nune tubulosus v. in gynophorum productus, in JDiosmeis 
calycis fundum late vestiens. —Ovarii carpella 4—5, rarissime plura v. pauciora, in unum 4-5- 
loculare connata, v. sspe basi libera et stylis v. stigmatibus tantum connata, rarissime 
omnino libera, 1l-locularia, sessilia v. gynophoro v. disco apice imposita. Styli breves 
v. elongati, distincti v. connati, non raro in unum sulcatum. nunc tortum coh:erentes, ter- 
minales ventrales v. imo basilares. —Ovula quovis loculo v. carpello szpissime 2, superposita, 
aseendentia, raphe ventrali cum micropyle supera. ^ Fructus varius, in Toddalieis Auran- 
tieisque ssepissime baccatus coriaceus v. drupaceus, 4-5-locularis, loculis sepius l-spermis, 
in ceteris utplurimum 4—5- (rarius 1-9-) coccus; cocci intus dehiscentes, simplices v. epi- 
carpio coriaceo ab endocarpio corneo v. chartaceo elastice 2-valvi soluto, endocarpii basi 
sepe semini adhzrente et cum eo secedente. Semina oblonga v. reniformia, swpissime 
sessilia et solitaria; testa varia, non raro crustacea et nitida; albumen O0 v. earnosum. 
Embryo rectus v. curvus, semper ratione seminis magnus; cotyledones planc foliace:e 
v. crassm, v. corrugate sese et radiculam involventes ; radicula semper supera, 
Frutices v. arbores, rarissime herbze, ginxidnloso-puncteits, odore smpissime gravido. Folia 
exstipulata, stepius opposita, petiolo interdum basi 2-glanduloso, simplicia v. sepius compo- 
sita 1-3-5-fololata v. pinnata, swepissime integerrima, sed .Diosmeis Zanthozyleis Auran- 
tieisque non raro serrulata, Zafforescentia varia, rarissime spicata v. umbellata, in 
plerisque cymosa et axillaris. 
Rutacere species includunt ad 650, per regiones temperatas et calidas totius orbis sparsas; maxima 
eopia in Afriea australi et in Australia occurrit, minima in Africa tropica zonisque frigidis. 
Ordo heteromorphus, multis aliis characteribus valoris diversissimi nexus, a Sizarubeis praecipue 
recedit foliis glandulosis, ovario, etsi in generibus variis profunde partito, vere syncarpo, lobis ope 
stylorum v. stigmatum connatis ; a Burseraceis foliis punctatis et fructu rarius drupaceo, 
FORM/E ABNORMES. 
Sapor Pi/avie amarissimus, et Ptelec corticis amarus. 
Caulis herbaceus in Monnieria, Tetradiclide, aliisque Ruteis, 
Folia simplieia in tribu JDiosmearum, in variis Boronieis, et in Leptothyrsa, Pitavia, Phelline, et 
