713 



OE. ISOETIFGLIA P 4:106. 



OE. LINE AT A P 4:106. 



OE. ZOSTERAEFOIiIA P 4:106. 



OLEA L, syst ed 1 (1735). 



O. EUBOFEA L, sp pi 8. Eu. B 1:471. 



cult. 



OZ.IGOMERIS Cambess. A 1:126 d. 



OZ.ZGOMEBIS GLAUCESENS Camb. 



Ab 183. A 1:126 d, 262. M 3:138 as 



ruderalis. 



O. RUDERAX.IS M 3:138 based on El- 



limia r Nutt, T & G Fl 1:125. 



OLIGOMERIS SUBULATA Boiss. 



B 1:53. Da 3. Z 1:302. P 1:86 Mig; 200 



Cedros. Greene, Cal ac b 2:391 Cruz. A 



1:127, 262 as glaucesceus (M 3:138 as 



ruderalis). 



OtllaO'iRICHUM DC. 



O. ZiYAZiZiZX Lindb. B 2:402. 



GenuM OL.NEYA A. Gray. 



Am ac mem ns, 5:328 (1855). 



OLNEYA TESOTA A. Gray. 



G, Ic. B 1:157. Ar, Son, CD, Baja. 



OX.FIDIEI.XiA UB.EDINIS M 1:19. 



OMAX.ANTHUS A. Juss, Euph T ent 50 



t 16 (1824). = Homalanthus fide IK. 



O. CAMPHORATUS Less. syn Corup 



260. B 1:402 as Tanacetum huronense 



(T: camphoratum fide IK). 



OMA1.OTES DC, Prod 6:83 (1837). = 



Tanacetum fide IK. 



O. CAMPHOR AT A DC 6:84. B 1:402 as 



T: huronense (camphoratum fide IK). 



OUYCHITJM 



O. DENSITY Brackenridge. B 2:340 as 



Pellaea densa. 



Geiina OPHIOGL.OSSUM LannaeuH. 

 OPHIOGLOSSUM CALIFORNICUM 



Prantl. 



Near San Diego, Cal. 

 OFHIOGLOSSUM PUSILLUM Nutt. 



Ophioglossum nudicaule Sturm. 

 S. C. to Fla. and La. Arizona. 

 O. VITX.G-ATTJM L, B 2:332. 

 OWOPTEBIS P 4:107. 



OFSIANTHES Lilja, Fl Luerig suppl 

 J.5 (1S40). ^Clarkia fide IK. 

 O. GAUROIDES Lilja, Linnaea 15:261. 

 B 1:232 as Clarkia rhomboidea. 

 ONAGRA A 1:332 d. 



O. CAX.IFOBNICA Small. A 1:332 d. 

 O. HOOKEBII Small. A 1:332 d. Ab 

 269. 



Genus OPU1VTIA Tournefort. 



"Tube of the flower very short, cup- 

 shaped: petals spreading or rarely erect: 

 ovary with bristle-bearing areolae in the 

 axils cf small terete deciduous sepals: 

 berry succulent or sometimes dry, mark- 

 ed with bristly or spiny areolae, truncate 

 with a wide umbilicus: seeds large, white, 

 compressed, with the embryo coiled round 

 the albumen; cotyledons large, folia- 

 ceous. Articulated, much-branched 



plants, of various shapes, low and pros- 

 trate or erect and shrub-like; young 

 branches with small terete subulate early 

 deciduous leaves, and in their axils an 

 areo'.a with numerous short easily de- 

 tached bristles, and. usually, stouter 

 spines, all barbed. Flowers on the joints 

 of the previous year, on the same areolae 

 with the spines, mostly large, open only 

 in sunlight. Fruit often edible, often 

 large." E. 



714 



Subgenus CYLINDROPUNTIA M. - 

 "Joints cylindrical, more or less tubercu- 

 lated; rhaphe usually not promint-ju, 

 therefore seed not margined; embryo 

 forming less than one circle around the 

 more copious albumen: cotyledons incon- 

 stant, contrary, oblique, or parallel to 

 the sides of the seed." E. 



Subgenus PLATOPUNTIA E. "Joints 

 compressed; rhaphe forming a promi- 

 nent bony margin around the seed; em- 

 bryo completing a litttle more than one 

 circle around the scanty albumen; cotyl- 

 edons contrary to the sides of the seed." 

 -E. 

 OPUNTIA BERGERIANA. 



Shrub 5-10 feet high: joints obovate 

 or oblong-ovate, 9 inches long, half as 

 broad: spines variable in number and 

 size, 1 or more over an inch long, 

 spreading: flowers very numerous at 

 top of joints, outer segments greenish- 

 red, inner deep bright-red, over 1 in.-.li 

 long. Very common in gardens of the 

 Riviera, most nearly allied to Opuntia 

 nigricans (MfK 1904. 59. GC 1904. XXXY. 

 34 f 14). 

 OPUNTIA BERNARDINA Engelm. 



"Loosely branched shrub. 2-4 ft high, 

 several stemmed from the base; joints 

 cylindrical, 3-12 in. long", with a slight 

 scurfy pubescence, never deciduous; tu- 

 bercles of the younger joints oblong and 

 very prominent, shorter and less marked 

 on the older; spines yellow. V4-lin. long, 

 1 or 2 usually longer and stouter ihu.ii the 

 others; fls in a dentse cluster at the ends 

 of the previous year's joints; inner seg- 

 ments of the perianth yellow, outer green- 

 ish, or dull red; fr ovate, less than an 

 ii:ch long, dieeply umbilicate, the tuber- 

 cles bearing a single short spine, becom- 

 ing at length dry, and only then decidu- 

 ous, usually fertile, but few-seeded; seed 

 flat, Li in. in diam, the rhaphe channel- 

 led. "Parish, Torr cl C 19:92. Day hills and 

 mesas, SBer. 



OPUNTIA HANBURYANA. 



Shrub 3-5 ft. high, of straggling- 

 growth: joints lanceolate oblong, var- 

 iable in size, the largest 11 inches long, 

 scarcely 4 bro i large, 



spreading, somewhat '(impressed and 

 twisted: outer perianth-segments del- 

 toid, the innermost obovate. obtuse, 

 mucronate, canary-yellow. Not com- 

 mon in gardens of the Riviera, distinct 

 on account of its habit, long spreading 

 spines, and the small ovary and fruit 

 (GC 1904, xxxv. 34 f 15. MfK 1904. 59). 

 OPUNTIA LARRKYI TVeber. 



"Plant only P-12 .:lm high, with 'arge < r~ 

 bicular glarcous joints; fru:t 'as 'arge as 

 a goose egg-', juicy, pulpy, and with our- 

 ple pulp: seeds small 'much h'ks tho of 

 O. ficus indica'. Type unknown. A Mex- 

 ican species, found by Dr. Weber about 

 Queretaro, and pronounced by him ttie 

 most delirious of all the fruits he hart 

 tasted. Known as 'camuesaa'. Coulter. 

 Cont Na hb 3:423. 

 Opuntia Tjiicayana. 



Britton. NY bot grard b 4:141, de- 

 scribes this from the Bahama Islands 



