i 



442 EXrLOIlATIOXS ACEOSS TOE GllEAT BASIN OF UTAH. 



0. rutUa, Nutt. in Torr. & Gray Flor. 1, p. 555. Joints 5 inches long, half as wide 

 obovate; leaves U lines long; areola) closely set with long straw-colored bristles 



few and 



a^'ish-red 

 spines, 1^-2 Inches in length. Flowers pale straw-colored, 2^-3 in diameter; ovary 



inch long 



oolly aculeolate areolte; exterior sepals obi 



sq 



or recurved at the elongated tip; petals obovate, obtuse, crenulate; style 



P 



gmas, longer than the stamens. The squarrose tips of 

 nicuous on the bud. 



Opuntia Missouriensis, Be Cand. Prod 3, j;. 472; Torr. dt Gray, Fl 1, p. 555 {in 



T 



part); Cactus ferox, Nutf. Gen. 1, p. 296. " 



From the deserts of Salt Lake Valley to Rush Valley; specimens without flower 

 or fruit. Joints small (2-3 inches long), broadly obovate or circular,- areohie closely 

 set; spines numerous, stiff, stout, angular, white, mostly deflexod. 



I 



Oi'UNTiA ]\IissouRiENSis, A^ar. ALBispiNA, Enr/eh?. (& BigcloiD^ I c. ^. 46 j t. 14, fs, 



8-10; Syyi. CacL j^- 44. 



Smitli Creek, Lookout Mountains, in Wcsteru Utah; flowering in July. By their 



slender flexuous spines, the specimens approach to var. tricliopliora. Flowers 3-3^ 

 inches in diameter, bright golden-yellow; ovary 1 inch long, w^ith 20 or 25 areola^, 

 scarcely spiny; exterior sepals obovate, cuspidate; petals about 8, obtuse, crenulate; 

 style shorter than the stamens; stigmas about 5, very short, erect. Some flowers have 

 elongated and very sphiy ovaries, evidently abortive. 



Opuntia fragilts, IlawortJiy Supph p. 82; Torr. S Gray^ Fl 1, p, 555; Synops. Cact, 

 p. 45; Cactus fragilis, Nutt. Gen. 1, p. 296. 



Fort Kearny to the North Platte country; in flower in June and Jul}^ This is, 

 I believe, the first time that the flowers of this species were collected since Nuttall's 

 discovery of it in 1813. Travelers report that the plant is very frequently seen in the 

 sterile prairies east of the Rocky Mountains, but that it is rare to find them in flower 

 and rarer still in fruit. Since many years I have the plant in cultivation from speci- 



mens brouglit down by Dr, Hay den, but have not been able to get it to flower. 

 Nuttall onl}' informs us that the flowers are solitary and small. In the specimen 

 before me, they are yellow, scarcely 2 inches in diameter; ovary 8-9 lines long; the 

 13-15 areolae are densely covered with thick white wool; the upper ones, bear a few 

 white spines; lower sepals broadly oval, w^ith a short cusp; petals 5, obovate, rounded, 

 crenulate; style longer than the stamens; stigmas 5, short, erect, cuspidate.* 



* Thron^rli the kiodriess of Dr. A. W. Chapman, of Apnlachioola, Fla., I have received living specimens and fruit 

 of O, Pes Com, 80 that I can now complete the description of thia very distinct southern apeciea. 



Opuntia Pes CoRVi,ZcCt>H/ti/i herl.EngeJmr, Append, to Stfnojys, Cad. in Proceed. Am. Acad. Arts .j- Sc.:^,2>- ^46; Chajy- 



con- 



8soa tortosve 



man, FL South. U. S. p. 145: diffusa, Iffite viridis; articulis parvis ovatis sen obovatis tumidis sa^phis teretinscnlis c 

 catenatis fragilibus; pnlvillis subdistantibus palviuatis ; foliis teretiusculis ovatis cuspidatis incnrvi^ ; areoiis jiiiiioribus- 

 albo-tomentosis setas parcas brevissimas pallidas et plerisqae aculeos 1-3 rectos rigidos 8a>pe basi couipressos 

 obscuros gerentibua, infimiii iuerinibiis; floribiis flavis miuoribns: ovario obovato pulvillos perpaucos fuaco-villosos ge- 

 rente; sepalis exterioribiis ovalo-Iauceolati3,interioribus obovatis cnspidatia; pctalis 8ub-5 obovatis spatulatis obtusis; 

 stylo stamina a>qnante,8tigmatibus 4-5 crectia; semimbus pancissirais angnate obtnseque marginatis in p^lpa viscosa 

 bacciie parvfe nibrre sfrpe floris rudimentis coronat^e nidulantibus. 



Barren sandy placea along the coast of Georgia and Florida. Joints 1-3 inches long, obovate tumid, or narrower 



V- 



