Heller : plants of the Hawaiian islands. 827 



CRUCIFERAE. 



LEPIDIUM L. Sp. PI. 643. 1753. 



Lepidium owaihiense C. & S. Linnaea, 1: 32. 1826. 



Collected at the Nuuanu Pali, Oahu. The gnarled and tough 

 woody stems of this species present quite a contrast to the 

 herbaceous species which are found in America. The inflores- 

 cence is pubescent, a fact which Hillebrand does not note. 

 Specimens were collected at an elevation of 1400 feet, growing 

 near the edge of the precipice, on the Konahuanui side. It is 

 said to grow on all of the islands of the group. 



May 24 (2365). 



Lepidium serra Mann. Proc. Am. Acad. 7:149. 1867. 



Neither Mann in his description of the type, nor Hillebrand 

 in his Flora, tell us anything definite about the habit of this 

 species. Both say, "a straggling, much-branched shrub, 2-3 

 feet high," which is correct, so far as it goes. I have seen the 

 plant at three stations, the first at the original locality, along 

 the Hanapepe river, not far below the falls; along the main 

 tributary of the Hanapepe, and on the edge of the plateau 

 above Waimea. Plants were plentiful enough at all these 

 places, but difficult to collect on account of their growing on 

 the faces of perpendicular rocks, and at some distance from 

 the ground. They usually grow in clumps, and have drooping 

 branches. The stems are simple, and naked for nearly their 

 whole length, only near the end bearing a profusion of linear- 

 lanceolate leaves, and long, drooping, many flowered peduncles. 

 The slender pedicels are puberulent. Speaking of the pods, 

 Mann says: "Maturis oblato-orbiculatus, stylo exemarginatura 

 minima vix exserto,'* and Hillebrand gives the character, 

 "silicule flat, suborbicular, not emarginate." In my specimens 

 there are varying degrees of emargination, but the styles are 

 decidedly exserted in all cases, when uninjured. There is a 

 specimen of Mann's plant in the Bernice Pauahi Bishop Mus- 

 eum, at Honolulu. 



June 24 (2427); from the original locality, "Hanapepe. 

 Kauai." 



