170 NATORAL HISTOR Y OF PLANTS. 



I. Ulme^.i — Flowers polygamo-dioecious ; more rarely herma- 

 phrodite, isostemonous, or more rarely 2-3-plostemonous. Sta- 

 minal filanaents straight or incurred in prefloration. Ovule 

 descending. Fruit dry and often winged (true Ulmece), or dru- 

 paceous, without wings {CelUdece). — Trees or shrubs, with juice 

 not milky, distichous leaves, accompanied by lateral stipules either 

 intra-axillary and independent or united, flowers in loose or con- 

 tracted cymes. — 1 1 genera. 



II. MoEE^.2 — Flowers monoecious or " dioecious, ordinarily tetra- 

 merous. Stamens in number less than or equal to the sepals, 

 filaments inflexed in prefloration and elastically straightened at the 

 period of anthesis, anthers introrse after anthesis. Ovule descend- 

 ing, anatropous or campylotropous. Fruit generally drupaceous, 

 indehiscent. — Trees or shrubs, rarely evergreen herbs,^ juice gene- 

 rally* milky or opaline, leaves alternate, often distichous, stipules 

 lateral persistent or caducous, leaving on the branches transverse 

 but rarely annular scars. Inflorescence mixed, formed of cymes 

 or oftener glomerules grouped on a spike-like capituliform rarely 

 racemiform receptacle. — 20 genera. 



III. Aetocaepe^.^ — Flowers monoecious or dioecious, similar to 

 those of the Morece, except that the staminal filaments are straight 

 in prefloration and at every age. Ovule descending or more rarely 

 {Conocephalece) ascending (and in this case completely or incom- 

 |)letely orthotropous), with micropyle always superior. — Trees or 

 shru'bs, with juice generally milky or opaline, leaves alternate rarely 

 opposite convolute in estivation, stipules ordinarily amplexicaul, 

 leaving annular scars on the axes. — 32 genera. 



IV. Cannabine^.^ — Flowers dioecious, isostemonous. Staminal 



1 VlmacecB Mieb. ElSm. (1815), 905. — Lindl. Bot. 609. 

 ■Veg. Kingd. (1846), 580, Ord. 221.— Endl. Gen. 3 ;patmM only such. 



275, Ord. 90.— Pl.-P™<?»-. xvii. 161, Ord. 183.— ■• But not constantly. 



Celtidea L. 0. Rich, ex Gaudioh. Voy. Freyein. » R. Br. Congo (1818).— Lindl. Veg. Kingd. 



Bot. (1826), 507 (this name, proposed by L. C. 269, Ord. 88.— Bndi,. Gm. 277, Ord. 92.— 



RiOHAUT), would doubtless bave priority, but Trec. Ann. Sc. Nat. s&. 3, viii. 38. — Artoear- 



appears not to have been published by him). — pacecB^vR. Prodr. xvii. 280, Ord. 184. 

 Enbl. loo. cit. 276, Ord. 91.— Lindl. loo. cit. » Bl. Bijdr. 516 (1825).— Dumort. Anal. 17. 



580, Ord. 221. — Etol. Gm. 286, Ord. 95.— A. DO. Frodr. xvi. 



* Morecs Meissn. Gen. 261 (part.). — Endl. sect. i. 28. — Smnulinea DtrHORi. foe. eit. — 



Cfen. 277, Ord. 92 (part.). — Moraoea Lindl. Lupulacea Rasp. Phys. ii. 496. — OamnaUnaeece 



Veg. Kingd. 266, Ord. 87 (part.). — Bur. Prodr. Lindl. Veg. Kingd. 266, Ord. 86. — CannaMtacea 



xvii. 211, Ord. 183 Sii. — Bromsonetiece, Chloro- Sbr. D««r. JifiSr. 188. — Carmabaeece Ai, Br. 



phorece, Ficeee, Dorsteniece G;Axmios. Voy. Freyein, AsehersFl.Brandeb, 611 ; Enl. 68. 



