r 



25 



grf^en ; those of 1]i<^ sterilo hrjiiicJn'H lanceolate in outlino, with fi thick 

 nirtr<;iii, (i to 10 liiH\'^ loiij,^, six to <'i<flit piniiiitciy-toothod ;unl parted, sonio- 

 tiines entire ; tliowo of thc> coiitral llowcriui;- iiriindics sinallor, litxNU-, (ititiro: 

 n(ia<l8 Hiugle, t<n-miuatiiif,' the braiK'-hcs: iuvolucro 3 lines high : rays 8, tliree- 

 tootht'd, Ihe chaif forming a cup ahout the disk llowere, tinitcd mil il maturity, 

 with oij;]it ovate, acnte-tipped teetli: disk llowcrs eight to ten, sterile: pap- 

 pus of six to ten unequal paleaceous bracts, mostly shorter than the akeue: 

 the ray akcnes over a line long, the rostollina a half line loDg. 

 A very peculiar species, but seemingly nearest If. fnitcscens of this island. It 

 ditfera from tliat species strikingly in manner of growth, in its inllorescenco, 

 in its leaves, and in its internal invohicre. The akenes are very similar but 

 larger. Jf. fniiescens is a very rare species from near the central part of tlio 

 island. This sftecies is very common on the south end in all the arroyos, 

 canons, and al«ng the Ix^aeh. It is a very homely plant, growing in great 

 elunii)s in barren places, and the most noticeable plant of the region. 



876. Bseria Palmeri Gray. First collected on this island by Palmer in 1H7.'". and after- 

 wards by Greene. It is very common at bottom of canons at south end of 

 island. March 2<». (No. -If. of 187"..) 



881. Franseria camphorata Greene. Bull. Cal. Acad., i, 192. Very common on the 

 .south end of the island. March 29. (No. 40 of 1875.) 



891. Perityle Grayi. Tiose, Bot. Gaz., xv., 118. 



849. Microseiis linearifolia Gray. At the north end. (No. aO of 1875.) 



834. Senecio Palmeri Gray. Dr. Palmer makes the following note with reference 

 to this ])lant: "Since my previous visit to this island this plant has d(v 

 creased ; spots that contained a thicket of it have now but dead jilants, with 

 a few .scattering ]dants alive." Professor Greene speaks of this plant as being 

 quite common. The rapid extermination of this species seems to be a parallel 

 case to that of Ctiin-essmCiindnliqyensis, spoken of by Mr. Greene. (Proc. Cal. 

 Acad., I, 217.) Fortnna(<'Iy Dr. Palmer has laid in a supply of this species, 

 and all our American herbaria will have good specimens, even if it should 

 become extinct. (No. 45 of 1875.) 



836. Centauria Melitensis Linn. This weed has become introduced on the north 

 end, and is gradually finding its way up the island. Not reported in the 

 other lists from the island. 



871. Sonchus oleraceiis Ijjnn. Small, slender form, from 2 inches to a foot high; 



radical and lower canliiie leaves mostly undivided. Shaily si>ots in canons; 

 not very common. At the south end. (No. 52 of 1875.) 



872. The same, but somewhat taller, with pinnate leaves, the lobes spinnlose-toothed. 



Also in cafious at the south end, but rarer. 



873. Sonchus tenerrimus Linn. A very small, sh'nder form 2 to 8 inches high. 



Growing in shady canons at the south end. An introduced species. Not 



before found on the island. Not common. 

 887, Gilia Nevinii Gray. Only a half dozen plants seen on south end of island. 



When first coUected in 187() it was found very abundant. Marcli 30, 1889. 



(No. 78 of 1875.) 

 833. Tlic same. A few i)lant3 found at the north end. April 1. 

 889. Nemophila racemosa Nutt. Have seen no specimens of this species. The 



Gnadalni)e plants of Palmer, 1875 (No. 7(1), were referred to N. aiiviki. 'I'lie 



linear segments of the leaves are strongly serrate. The flowers minute, 



apparently smaller than the species. Among rocks, edge of dry atroyo. March 



30, south end of island. 

 852. The same, from tlui north end, where it is more connnon, and found among 



rocks ill canons. 



