uliginal 



unarmed 



in swamps; ulig'inal, occasionally 

 used for the foregoing. 



Tjrna (Lat., the elbow), a measure of 

 about twenty-four inches ; ulna'ris, 

 the length of the forearm. 



uloden'droid (cISor, resemblance), like 

 the former fossil genus Ulodendrov , 

 Rhode, applied to branches of Lepi- 

 dodendron and Sigillaria, bearing 

 two opposite rows of large, cup- 

 shaped scars (Scott). 



ulotricha'ceous, resembling or allied 

 to the algal genus Ulothrix (Kiltz.). 



u'lothrix {olKos, shaggy ; 0pl|, hair), 

 (1) in hair-like crisp linear divisions 

 (J. S. Henslow) ; (2) Ulothrix is a 

 genus of chlorophyllaceous Algae. 



ulter'ior (Lat., farther) Pith, cellular 

 stnicture formed in the axis of the 

 root after the separation of the stele 

 (Fremont). 



Ult'imate {uUime, to the last degree) 

 Strength, the minimum load on a 

 tissue which causes its rupture 

 (Drummond). 



TJlto'nian [Ultonia, Ulster), relating to 

 the province of Ulster (Praeger). 



ul'tra-seta'ceous {ultra, beyond; seta, 

 a bristle, + aceous), very long- 

 drawn-out. 



Um'bel, Umhel'la (Lat., a sunshade), 

 (1) an inflorescence, properly in- 

 determinate, in which a cluster of 

 pedicels sjning from the same point, 

 like the ribs of an umbrella ; (2) X 

 the pileus of certain Fungi (Lindley) ; 

 com'pound ^^ , when each ray itself 

 bears an umbel ; cy'mose '~ , an 

 apparent umbel, but with the flowers 

 opening centrifugally ; a cyme which 

 simulates an umbel; par'tial '^ , 

 sim'ple '~ , an umbel each of whose 

 rays bears a single flower only ; 

 nm'bellate, umbella'tiis, having the 

 inflorescence in umbels ; Um'bellet, 

 a small umbel or a simple one ; Um- 

 bel'lifer {fero, I bear), a plant which 

 bears umbels ; umbelliferous, -rus, 

 bearing umbels; umbellifio'rus(^os, 

 fioris, a flower), umbellate ; umbel'li- 

 form, umhelliformf is {forma, shape), 

 umbrella-shaped ; Um'bellule, Um- 

 hcl'lula, an ultimate umbel in a com- 



pound one ; umbel'lulate, umbella- 

 la'tus, having partial or secondary 

 umbels; umbelluliferous, -rus {fero, 

 I bear), bearing simple umbels, 

 um'ber, a cool brown ; cf. umbrinus. 

 umbili'cal (pertaining to the umbilicus, 

 the navel) Cord, a vascular strand 

 by which seeds are sometimes at- 

 tached to the placenta, the funicle ; 

 umbili'cally, as a Lichen thallus 

 centrically afiixed to its matrix, or 

 an epithecium which is navel-like; 

 umbili'cate, umhilica'tus, (1) navel- 

 like, depressed in the centre ; (2) % 

 = peltate; TJmbili'cus, (1) the 

 hilum of a seed ; (2) the ostiole of 

 certain Fungi (Lindley); (3) a much- 

 branched rhizoid in some Lichens, 

 as in Umbilicaria; (4) the boss on 

 the valves of some Diatoms. 

 XJm'bo (Lat., any convex elevation), a 

 boss, as the centre of the apophysis 

 of the cone-scales in Finus Pinaster, 

 Soland. ; um'bonate, umbona'tus, 

 bearing an umbo or boss in the 

 centre ; umbo'nnlate, unibonula'tus, 

 having or ending in a very small 

 boss or nipple, 

 umbracnlif' erouB {umhrdculum, a sun- 

 shade; fero, I bear), having the 

 shape of an expanded umbrella ; 

 umbra'culiform, umbracuhform'is 

 {forma, shape), having the general 

 form of a parasol, as the stigmas 

 of Sarracenia ; Umbra'culum, the 

 stalked capitulum of the sporo- 

 phore in Marchantia, bearing the 

 reproductive organs on the under- 

 side. 

 umbratic'olous {umbraticus, shady, 

 colo,- I inhabit), growing in shady 

 places. 

 umbrel'la- shaped, umbraculiform. 

 um'brine, umbri'nus (Mod. Lat.), the 

 colour of raw umber, a cool but 

 turbid brown ; burnt umber is deept r 

 and warmer, 

 umbro'sus (Lat., shady), growing in 



shady places. 

 unangula'tus {unus, one; angulvs, a 

 corner), one-angled, as applied to a 

 stem or similar organ. 

 unarmed', destitute of prickles or 



397 



