OF ARTS AND SCIENCES. 69 



Boerhaavia ? A doubtful species, not in good fruit, between 



the last and B. hirsuta. Common iu gardens at Guaymas, widely 

 procumbent (172) or smaller and upright (172. 1 ,). 



Boerhaavia erecta, Linn. Bloom white, becoming pink. High 

 mesas at Guaymas. (182.) 



Boerhaavia erecta, Linn., var., with narrow leaves ; a common 

 western form. Guaymas. (678-680, 684-687.) Also what is prob- 

 ably an abnormal form of the same. (682.) 



Boerhaavia alata. Apparently erect, 2 feet high, much branched, 

 puberulent, reddish: leaves narrowly oblong to linear, or the lower 

 broader, H inches long or less: inflorescence loosely paniculate, the 

 slender pedicels (1 to 3 lines long) solitary or subumbellate : perianth 

 pink, 2 lines long: stamens (5) and style included: fruit nearly 2 lines 

 long, truncate, more or less broadly 5-winged, the wings often broader 

 than the body, narrower below. — On a small rocky island in Guay- 

 mas harbor. (332.) 



Boerhaavia triqdetra. Similar to the last, puberulent ami 

 viscid, procumbent : leaves lanceolate, acute or oblusish : pedicels 

 very short (about ^ line) : perianth pink, a line long: stamens (2) 

 and style included: fruit a line long, truncate, broadly obpyramidal, 

 very acutely 3-4-angIed, the sides rugose. — Allied to B. pterocarpa, 

 which has still smaller flowers (^ line long) with 2 or 3 stamens, and 

 a broader-bodied wing-angled fruit attenuate to a stipe-like base. 

 Sandy plains and stony ridges near Los Angeles Bay. (521.). 



Boerhaavia Wrightii, Gray. (B. bracteosa, Watson.) Flowers 

 "waxy white'': distinguished from the following triandrous spicate 

 species by the usually conspicuous thin bracts and the broader fruit, 

 which is obtuse and acutely angled. Los Angeles Bay. (603 I 



Boerhaavia Xante Annual ; stems sparingly branched, Bome- 

 what floccose-pubescent and puberulent, or glabrous above, occasionally 

 with viscid spots, 2 feet high or less: leaves ovate to oblong-ovate or 

 the upper narrowly lanceolate, sinuate, obtuse or acute: flowers large, 

 in a rather loose raceme an inch long or less ; bracts lanceolate and 

 bractlets linear, acuminate: perianth " white,*' spreading, 11 lin< 

 stamens (4) and style long-exserted: fruit obloug-obovate, obtuse, ;• 

 line long, rather acutely 5- (4-6-) angled, rugose in the intervals. 

 First collected by Xautus (n. 93) at Cape Saint Lucas. Sands m< 

 Guaymas. (681.) 



Boerhaavia Palmeri. Resembling tie' last ; stems procumbent 

 or ascending, glandular-pubescent nearly tbrougl t : spike-like ra- 

 ceme short and dense in flower, 4 lines long or less, about 6 lines long 



