228 MALVACE.^. Modiola. 



On the Wallawallah, Oregon, Nuttall ! — Stem scarcely a span long, 

 branching. Leaves rather shorter than the petioles, about an inch in diame- 

 ter. Flowers 3-4 lines in diameter. Bracteoles usually 2, setaceous, deci- 

 duous. Petals roundish-obovate, pubescent externally on one side of the 

 midiierve, glabrous Avhere it is overlapped by the adjoining petal. Fruit not 

 seen. — It appears to agree in almost every respect with the preceding (which 

 we have not seen), except that the flowers are nearly sessile. We cannot de- 

 termine the color of" the flower from our specimen. 



M. xaiiViLim ofRafiiiesque is a varietyof M. Alcea^aad is probably an introduc- 

 ed plant. 



M triloha of Muhlenberg, {cat, p. G5 ; Nutt, gen. 2. p. 81.) — Of tliis species we 

 can find no description. 



M. abutlloldes, Linn, is said by Pursh to occur on the sea-coast of Carolina ; but 

 this is very doubtful. 



3. SPH^RALCEA. .4. St. Ilil. fl. Bras. 1. p. 207. 

 Malva § Sphieroma, DC. 



Calyx 5-cleft, with 3 setaceous bracteoles at the base. Carpels numerous, 

 aggregated in a subglobose head, 2-valved, 2- or several-seeded. Radicle in 

 the upper seed superior, in the lower one inferior. — Herbaceous plants. 

 Leaves entire or lobed. Peduncles short, many-flowered. 



1. S. stellata : densely clothed with a grayish stellate pubescence ; leaves 

 oblong-lanceolate, acute, petioled, erosely serrate, rugose ; peduncles axiEary, 

 3-5-flowered ; flowers aggregated ; carpels 12-14, bimucronate, 2- (rarely 3-) 

 seeded. — jSida stellata, Toit. ! in ami. lye. New -York, 2. p. 171. 



Margins of small brooks, near the sources of the Arkansas, Dr. James ! 

 — Stem 1-2 feet high, brairched. Leaves 2-3 inches long, 4-5 lines wide : 

 petioles about 4 lines long. Flowers very numerous ; the common peduncle 

 2-3 lines long : pedicels extremely short. Bracteoles very slender. Calyx 

 cleft below the middle; segments ovate-lanceolate, acute. Corolla purple 

 (in dried specimens), about half an inch in diameter. Carpels -with 2 short 

 slightly recurved points. Seed reniform, glabrous. 



2. .S. «cer//b/ia (Nutt.): minutely roughish-tomentose -with a stellate pu- 

 bescence; leaves 5-lobed, somewhat cordate ; the lobes acute, toothed, un- 

 equally serrate; peduncles aggregated, terminal; carpels 12-14, pointless. — 

 Malva (Sphseroma) aeerifoha, Nutt.! mss. 



Rivulets east of Wallawallah, Nuttall .'—Stem, much branched. Leaves 

 2-2 i inches long, and about the same in width : petioles about J the length 

 of the lamina. Flowers 3-4 together at the summit of the branches. Brac- 

 teoles linear-lanceolate. Calyx cleft to the middle ; segments broadly ovate, 

 acute. Corolla an inch in diameter ; purple (in dried specimens). Carpels 

 pilose, dehiscing on the back from the summit to the base. — The seeds had 

 mostly fallen out in our specimen, but there appeared to have been 2 or 3 in 

 each carpel, scabrous with short hairs. 



4. MODIOLA. Moinch, meth. 620; .4. St. Hil. fl. Bras. 1. p. 211. 



Calyx 5-cleft, with 3 bracteoles at the base. Carpels numerous, arranged 

 circularly, 2-valved, spuriously 2-celled transversely by the inflexion of a 

 valve-like process, 2-seeded. Radicle in the upper seed superior, in the low- 



