66 



which are open only during the middle of the day. At Corpus Christi, 

 in open ground near the beach, altitude about 10 feet. 



May 30 (1795), type locality; "prope Zelaya Mexicanorum." 



Sida Helleri Rose, n. sp. 



A low shrubby plant 3 cm. or less high, forming clumps 6 cm. in diame- 

 ter ; branches woody and procumbent, often .covered with sand, and 

 with erect, herbaceous, flowering shoots ; leaves small, a little 

 broader than long, 8 to 1 2 mm. long, rounded at apex, truncate or 

 rounded at base, 3 to 5 -nerved, coarsely crenate, more or less 

 abundantly stellate-pubescent ; petioles 6 to 1 2 mm. long ; stipules 

 persistent, foliaceous, linear, obtuse, 4 mm. long ; flowers small, 

 subsessile, solitary in the axis of the leaves; calyx campanulate, 5- 

 lobed ; sepals ovate, obtuse, 3 mm. long, in fruit 6 mm. long ; 

 corolla pale copper-colored, larger than the calyx ; petals broad, 

 somewhat oblique, glabrous ; stamens united into a slender tube ; 

 styles 5, slender, with capitate stigmas; capsule deeply 5-lobed; 

 carpels obtuse at tip, somewhat inflated, dehiscing at apex, one- 

 seeded. Very common ; flowers open about 4 p. M. Collected 

 along the sandy shore of Corpus Christi Bay at the Oso, by A. A. 

 Heller, April 9, 1894 (1533). 



Very much like S. cuneifolia Gray (PI. Wright. 7 : 18), but with 

 very different shaped leaves, much longer fruiting, calyx with obtuse in- 

 stead of acute lobes, larger, more inflated and different shaped capsules. 

 The following note is from a letter of Mr. E. G. Baker, the well- 

 known authority on Malvaceae : 



11 1 have taken an opportunity of comparing your Sida, and I have 

 very little to add from what you have already told me. It is a very 

 interesting little plant, closely allied to S. cuneifolia A. Gray, but per- 

 fectly distinct. The shape, size and base of the leaves are different, and 

 the calyx seems a good deal larger in your plant than in S. cuneifolia. 

 It has the same ovate, membranous, slightly inflated carpels, so different 

 from the Eu Sideae, and I suppose you will place it in the Section Pseudo- 

 Malvastrum. I see there is generally one rather large leafy bract at the 

 point of junction of the pedicel with the main stem." 



J. N. ROSE. 

 Sida physocalyx A. Gray, Bost. Jour. Nat. Hist. 6: 163 (1850). 



In rich, open ground at Kerrville, altitude 1650 feet, about 75 miles 

 south of the type locality. Stems numerous, and about 2 feet long in 

 older plants, from a stout root. Flowers small, dull yellow, usually 

 opening about eleven o'clock a. m., and remaining open an hour or less. 



