URTICACÉES. 517 
GENERA 
I. URTICEÆ. 
1. Urtica T. — Flores monœci v. diœci ; receptaculo parvo convexo. 
Calyx masculus 4-phyllus; foliolis liberis v. ima basi connatis subæqua- 
libus, intus concavis, extus plus minus stimuloso-hispidis ; alabastro 
apice depresso ; præfloratione alterne imbricata ; sepalis lateralibus in- 
terioribus. Stamina 4, sepalis opposita; filamentis liberis sub gynæcei 
rudimento, sæpius cupuliformi hyalino, insertis, crassiusculis, in ala- 
bastro inflexis, sub anthesi elastice patentibus; antheris introrsum 
2-locularibus, longitudinaliter rimosis. Calyx fœmineus 4 - phyllus ; 
fohiolis liberis v. basi connatis, decussatim imbricatis ; lateralibus 2, in 
præfloratione interioribus majoribus, erectis, nune eucullatis; exte- 
rioribus sæpius multo minoribus, nunc subcarinatis, patentibus. 
Germen liberum, 1-loculare ; stylo brevi v. subnullo, mox in apicem 
papilloso-stigmatosum longe penicillato-capitatum dilatato, aut deci- 
duo, aut diutius persistente. Ovulum 1, paulo supra basin loculi 
postice insertum, adscendens, suberectum, orthotropum ; micropyle 
supera, sammo loculo, obturatoris angusti ope, sæpius adhærente ; funi- 
culo brevi v. subnullo. Fructus siccus, rectus, oblongus v. ovatus, com- 
pressus læviusculus v. verruculosus, calyce auclo membranaceo v. raris- 
sime carnosulo vestitus. Semen suberectum suborthotropum ; albumine 
carn0s0 ; embryonis axilis Carnosi cotyledonibus obcordato-rotundatis 
v. subellipticis ; radicula supera cylindro-conica. — Herbæ annuæ v. 
perennes, raro frutescentes ; foliis oppositis petiolatis, dentatis v. rarius 
integris v. inciso-lobatis, palmatim 5-7- v. rarissime 3-nerviis, Cystoli- 
this punetiformibus v. raro linearibus obsitis; stipulis lateralibus interpe- 
tiolaribus v. per paria connatis ; floribus parvis glomerulalis ; glomerulis 
