PLANTS NOViE THURBERIAN.5:. 307 



scars of fallen leaves, the younger strongly glaucous-white, as are the thick leaves. 

 The latter are only an inch or an inch and a half long, smooth and glabrous, nearly 

 veinless, their short teeth armed with long and stout fulvous prickles, and one or two 

 smaller ones occasionally appear on the midrib. The specimens are wholly past flow- 

 ering. The dehiscent capsules scarcely exceed half an inch in length, are mostly five- 

 valved, and armed with short prickles with tuberculate-dilated bases, but glabrous. 

 Seeds globular, with less salient reticulations than in A. Mexicana. The wood of the 

 branches is hard and close-grained. 



Malvastrum Thurberi (sp. nov.) : pube brevi stellata scabrido-pubescens ; foliis 

 subcordato-rotundis crenatis nunc subtri-quinquelobis (lobis obtusissimis) subtus 

 cinereis ; floribus fere sessilibus glomeratis, glomerulis plurifloris rcmotiusculis 

 secus ramos superne aphyllos spicam interruptam efficientibus ; bracteolis minimis ; 

 calyce fulvo-tomentoso, lobis late triangulari-ovatis tubo paullo brevioribus ; corolla 

 (majuscula) purpurea; coccis 10-12 muticis fere glabris. — In a valley near Santa 

 Cruz, Sonora ; July, 1852. Also found near San Diego, California, by Dr. Parry. — 

 Stem 3 to 5 feet high, herbaceous; the base not seen. Leaves 2 inches or less in 

 length, mostly glabrate above ; the floral ones soon reduced to small bracts. Flowers 

 about as large as in M. coccineum, densely glomerate, and as if falsely verticillate, 

 along the upper and nearly leafless portion of the flowering stems. Mature cocci gla- 

 brous, except at the summit, two-valved. 



Abutilon Thurberi (sp. nov.): humile; caulibus gracilibus cum petiolis peduncu- 

 lisque pilis longis patentibus hirsutissimis ; foliis cordatis crenato-serratis acumi- 

 natis membranaceis utrinque viridibus glabratis ; pedunculis gracilibus axillaribus 

 folio brevioribus unifloris seu ad apicem ramorum subcorymbosis ; calycis laci- 

 niis ovatis acuminatis petalis aureis dimidio brevioribus ; capsula pentacocca, coccis 

 membranaceis demum patentibus bivalvibus longe aristatis trispermis. — Magdalena, 

 Sonora; in shady places; October, 18-51. — Stems a foot high, erect or spreading. 

 Leaves about an inch and a half in diameter, thin, when young beset with a few hairs. 

 Peduncles 6 to 9 lines long. Flowers rather smaller than those of A. crisjmm. Calyx 

 beset with the same long and slender hairs as the peduncles, and also somewhat vis- 

 cous. Mature carpels with the body glabrate, ovoid, or oblong, not bladdery, about 

 the length of the calyx, abruptly tipped with an exserted and slender, at length two- 

 parted, sparsely hirsute awn, which is fully half as long as the cell. Seeds 2 or 3, su- 

 perposed. 



