ARGEMONE 



ARIS^MA 



391 



AA. Fls. white (rarely purple). 



grandifldra, Sweet. Fig. 372. Glabrous and glaucous, 

 1-3 ft. high, almost destitute of prickles, stout: Ivs. 

 sinuate-pinnatifid, the lobes only weakly spinescent, 

 white- veined: bracts scattered along the fl. branches: 



372. Argemone grandiflora. ( X H) 



fls. 3-6 near together, 4 in. across: caps.-valves scarcely 

 crested. S. W. Mex. B.R. 1264. L.B.C. 16:1546. 

 B.M. 3073. Very showy. 



platyceras, Link & Otto. Robust, lJi-4 ft., very 

 spiny, the Ivs. glaucous: Ivs. sinuate-pinnatifid, spiny: 

 fl.-bracts aggregated below the fls.; petals truncate, 

 large, white (rarely purple), the fls. 2 in. or more across: 

 caps.-valves crested or spiny. Var. hispida, Prain 

 (A. hispida, Gray). Petals rounded; sepals and caps. 

 densely prickly: plant hispid. Var. hispido-r6sea, 

 Fedde. Petals rounded, rose or rosy white; sepals nar- 

 row, sparsely prickly. Var. Hunnemanii, Fedde. Petals 

 rounded, white: plant stout. The species is very varia- 

 ble and widely distributed in N. and S. Amer. Likely 

 to appear in cult, in several forms; all of them have 

 thick and densely prickly caps.-valves. 



alba, Lestib. (A. mexicana var. dlbiflora, DC.). Slen- 

 der, 1-3 ft., somewhat glaucous: Ivs. glabrous, pin- 

 nate-lobed and sinuate, the lobes oblong-acute, spiny 

 toothed: fls. solitary or 2-3 together, on naked pedun- 

 cles, 3 in. across, white; petals oblong, narrowed at 

 base, truncate at top. Southern states and south. B.M. 

 2342 (as A. albiflora). Sparingly run wild. Caps.- 

 valves thin, reticulate spiny. L H. B. 



ARGYREIA (silvery, referring to the under side of 

 the Ivs.). Convolmdacese. SILVEB WEED. Asiatic tender 

 climbers allied to Ipomcea, sometimes grown in the open. 



Lvs. usually large, silvery, tomentose or villous 

 beneath: cymes usually few-fid. ; corolla campanulate; 

 sepals 5. They require too much room befoie flowering 

 to be popular in Amer. A. cuneata is one of the dwarf cst 

 and most floriferous kinds. Prop, by cuttings or seeds, 

 the former over bottom heat. About 25 species. 



tiliaefdlia, Wight (Kiven tilisefolia, Hort.). Fls. white, 

 violet or rose-purple, widely funnelform: Ivs. ovate- 

 cordate, 2-3 in. diam., shortly acuminate or obtuse. 

 Prop, is from seeds. E. Indies. Intro. 1890 by Peter 

 Henderson & Co. 



cuneata, Ker-Gawl. Two to 5 ft.: st. downy: fls. 

 large, bright but deep purple, on hairy peduncles which 

 are shorter than the Ivs.: Ivs. obovate-cuneate, emar- 

 ginate, glabrate. E.Indies. B.R. : 661. 



A. 1'ierreftna, Hort.(?). Corolla funnel-shaped, white tinted with 

 rase. Tonquin. K. H. 1906 : 560. See p. 3566. j^ TAYLOR t 



ARIA: Surbus. 



ARIOCARPUS (Aria-like fruit). Cactacex. Top- 

 shaped succulent desert plants, mostly buried in the 

 ground, the broad aerial part covered with angular 

 tubercles bearing no spines: fls. from the center of the 

 plant, large, white or pink : fr. small, naked ; seeds black, 

 roughened. A genus of 6 or 7 species confined to Cent. 

 Mex., except a single species in S. W. Texas. A very 

 distinct genus, easily distinguished from Mamillaria by 

 its tubercles. 



A. Upper surface of tubercle with a broad and deep wool- 

 beaiing longitudinal groove, which widens below. 



fissuratus, Schum. (Anhalbnium flttgelmannii, Lem.). 

 LIVING ROCK. The flat tubercle-covered top 2-5 in. 

 across, tapering below into a thick root; tubercles im- 

 bricated and appressed, triangular in outline, }-! in. 

 long and about as wide at base, the upper surface fis- 

 sured in bands, the outer ones forming an elevated 

 margin: fls central, about 1 in. long and broad, shading 

 from whitish to rose. On limestone hills in the "Great 

 Bend" region of the Rio Grande in Texas, and extend- 

 ing into Mex. I.H. 16, p. 73, and fig. Contr. Nat. 

 Herb. 13, pi. 62. 



Lloydii, Rose. Fig. 373. Plant body with rounded top, 

 4 in. or more in diam.: tubercles imbricated, sin. broad 

 at base, the upper portion rounded, obtuse, broader 

 than thick, the whole surface fissured, but not in 

 definite bands: fls. purple, about Uin. long; petals broad, 

 apiculate. This species differs from A. fissuratus in 

 shape and surface of tubercles, in its round top, and 

 more southern range. Cent. Mex. Contr. Nat. Herb. 13, 

 pi. 63. 



Kotschubeyanus,Schum.(A. sulcatus,Sch\m.). Plants 

 nearly concealed by the ground, often less than 1 in. 

 broad at top, with a deep thick root: fl.-tube nearly fin. 

 long; petals sin. long, rose-pink. Cent. Mex. Much 

 smaller than the last two. Only recently re-intro. into 

 cult. A very distinct species. A. McDbwellii, Haage 

 & Schmidt, is the same or a near species. 



AA. Upper surface of tubercle not grooved. 

 retusus, Scheidw. (Anhalbnium prismdticum, Lem.). 

 The flat top 3-8 in. across: tubercles imbricate, but 

 squarrose-spreading, sharply triangular-pyramidal and 

 very acute, with a sharp, cartilaginous tip, which usually 

 disappears with age and leaves the older tubercles blunt 

 or retuse, %-l in. long 

 and about as wide at 

 base, the upper sur- 

 face almost plane and 

 smooth, except that it 

 is more or less pul- 

 verulent, and often 

 bears a small tomen- 

 tose tuft just behind the 

 claw-like tip: fis. rose- 

 color. Mts. of Mex. 

 -A. trigbnus, Schum. 

 and A . furfuraceus, 

 Thompson, are similar 

 species sometimes in 

 cult. j. N. ROSE. 



ARIS.EMA (Greek- 

 made name, of no par- 

 ticular significance). 

 Ardcex. INDIAN TUR- 

 NIP. DRAGON ARUM. 

 Odd hooded aroids, 

 sometimes grown in 

 hardy borders and 

 some species as pot- 

 plants. 



About 60 widely dis- 

 tributed herbs, with 373. Ariocarpus Lloydii. 



