1184 



OXYDENDKUM 



late, 3-6 in. long, glabrous, veiny, slender-stalked: 

 clusters home on leafy shoots of the season: fls open- 

 ing slowly. Rich woods. Pa. and Ohio, along the Al- 

 leghemes to Pla. B.M. 905. B.B. 2:571. S.S. 5:235. 

 F. W. Barclay and W. M. 



wood or Sorrel tree Oxydcndron arboreum (X J-a) 



OXYLdBIVJiiGreek. sharp potl). Leguminbsm. This 

 s one of inany geuera of Australian shn.hs with pea- 

 ike (is. which are little known in .-nKivnti.,,, For 



ni.tri- hi. ,„iu under ghiss none ..r ii,,,,, ..,|, ,■,,/,•.,„,, 



'<ni,n:, „s!s. Oxylobium is a li ; ~ : - . i.s. of 



■ lii'li l"ili:i|'s a dozen have been . ■ i , ,, ■|'|',eii- 



keel or the base of the standard. O. (/,il/isl„rh,,s is per- 

 haps the best for conservatories. In America it is cult 

 only in S. Calif. """■ 



Generic characters: Ivs. very short-stalked, opposite 

 or more or less whorlod. rarely scattered or alternate: 

 as. m t.-,-iniii.il ,.r nxillary racrines; petals clawed; sta- 

 mens fivr : „v;„y mIIuus, s.smIc or stalked, 4-30-ovuled. 

 JNearesi t,, ( imi,/,,.,,,:,. I,ut tli,- keel is about as long as 

 ine wintrs, Willi,- ,n t'hunzeiua the keel is much shorter, 

 ine following species was considered the type of another 

 genus ; it is distinguished from all other species of Oxy- 

 lobium by the incomplete dehiscence of the pod. See 

 Flora Australieusis 2:14 {186i). 



Callistachys, Benth. Tall shrub: Ivs. mostly in ir- 

 regular whorls of 3, varying from ovate-oblong and 

 lA-Z m long to lanceolate and 4-5 in. long, leathery, 

 silky-pubeseent beneath when young: racemes oblong 

 or pyramidal, 2-6 in. long. B.B. 3:216 fas CallMachys 

 lanceolata). B.M. 1925 (as G. ovata). P.M. 8:31 (as C 

 35^35 ■ ""''^"^^ '"* ^- '■<^'"«°)- J-H. III. 



OXYPfiTALUM (Greek, sharp peM). Asclepiadcicecv. 

 U. euruleum is a tender twining herb from the Argen- 

 tine Republic with changeable 5-lobed fls. about an inch 



OYSTER PLANT 



across. The fls. are said to be pale blue when they first 

 open, then purplish, and when withered lilac. Not cult 

 m America, but apparently desirable for cultivation here' 

 Ihe following are perhaps obtainable from Europe- O 

 appendicHMnm, with pale yellow, fragrant fls.;' O 

 lianksia, with purple fls., and O. solanoides, blue' 

 tinged rose. ' 



Oxypetalura is a genus of about 50 species, mostly 

 South American and largely Brazilian herbs or sub- 

 ^^rn^^"!'°l "'■ "?'= ''■^- opposite: calyx 5-parted: 

 corolla deeply 5-cut, short-tubed: scales of the corona 5 

 fastened at the base of the corolla and staminal tube. 



csBrtleum, Dene. Downy: Ivs. short-petioled, oblong, 

 one of each pair of the upper Ivs., 3-4-fld. : corolla-lobrs 

 but cordate-hastate at the base: peduncles axillary from 

 spreading : scales of the corona 5, erect, darker blue 



R'M-''-ic™?iJ.""^'.-'^™"'?<' ""^ "o*"''^'' at tl^e apex! 

 B.M. 3030 (Tweedm versicolor). 



Thlee^T??^^^ ^^-.^h ''"""'^ *^'">- Leguminis^. 

 Ihree Colora.lo wild flowers are offered under this 

 name. Ihe fls. are pea-shaped, borne in spikes and 

 range from white through blue and purple to crimson 

 The plants are tufted, and the Ivs. are odd-pinnate' 

 have 7-10 pairs of Ifts., and are often woolly white 

 beneath. O.Lamherti is one of many plants that have 

 been charged with being the "Loco weed" wliich ruins 

 western horses. This genus, according to E. L. Greene 

 (Pittonia 3:208), should be referred to AragaUus 

 Aragallus is reviewed in Erythea 7:57-04 (1899), but 

 the genus is not defined. It is closelv related to Astray 

 alus, and differs essentially in the ii.,,), I„ ii,^ iimilIIv 

 2-celled instead of 1-celled. About , ,|,, , i, | j,,,^ „f 



Old World Oxytropis said to be cull m i u i,i,,.|iv 



in rockeries. They are hardy, ea^i I ii.j, i, /.,,,: or 

 by division, and prefer a dry, samU lUim These 

 plants are of very minor value horticulturally. 

 A. Stipules free: pod 1-loculed. 

 dellixa,, nc. {AragdUus ,h.n/r„.. H-llfvl A foot or 

 less high: Ifts. crowded in 1 ■ ii, ,.,,,. i ''n.-foHte tn 

 oblong, 3-6 lines long: II- i, : ■ ,, i,„,„'. , ', 

 1-celled. Mts., Brit. Amur .. i , "' ' ' 



distinct species, by reason .-1 n- i,i,„i, . 



-Very 



AA. Stipules adnate to the petiole: pod S-locvJed. 

 L4mbertil, Pursh {Aragallus Crimhertl, Greene) 

 Lfts. about 7 pairs, 4-10 lines l<m"- spike sometimes 

 short-oblong, dens. 1) il.i , ,,[i,,i j,,,,^ an.l si.arv,-K- ri,i . 

 fls. 1 in. across, i \ pi' • , , ■ i i i, ,,i- \ i,,|ii ■ i ' ' '*. 

 inflated, distinctlv^^ ,i .:,, ,„,i„n' ,.' i ■'' ,""i 



turgid but not ' u ■,,[ i ,',,' i," 



leathery, subter.-i.-. i i, ,.' ' i ,' i,, ,'i^'" 



perfectly 2-locuIi-.l ... ', ,,,, ,, I r , """ 



B.M. 2147 (dark bill. i: 1; ):■,.! ,, , '[ ''; , , 1' 



Aven Nelson, in Kr\ i n. a , .. ', -a \ - 1 im i !,,■ - 1 -)... i ' 



be restricted to the |.ui |.l,- and vic.|i-t-ti,| t.inus 1) "l\l" 

 Andrews offers a crimson-Hd. form, and also var. Bpi- 

 cMa, which has large spikes of white fls. -^v jj 



OXYtTKA. See La 



!/!"■ 



OYSTER PLANT or SALSIFY. Tra 



gopogoH porn- 



