HORACE MANN ON HAWAIIAN PLANTS. 



533 



Santalum, Western Pacific. 

 JSxocarpus, Australasia and Moluccas. 

 Astelia, " " " 



These sixteen genera comprise 76 species or 4.75 to a genus, thus taking an important 

 place in the flora. All the species of the following families are peculiar to the group, 

 omitting of course species known to be introduced. 



Ranunculaceae. 



— Menispermaceae. 

 Cruciferae. 

 Violaceae. 



— Bixaceas. 

 Pittosporaeeas. 

 Caryophyllaceae. 

 Portulacaceae. 



— Carnelliacere. 



— Tiliaceoe. 

 Geraniaceas. 

 Rutaceas. 



— Aquifoliaceas. 



— Celastraceoe. 



— Saxif'ragaceas. 



— Halorageae. 



— Begoniaceae. 

 Araliaceae. 

 Composite. 

 Lobeliaceae. 

 Ericaceae. 



— Ebenacese. 



— Sapotacea?. 

 Myrsinaceae. 

 Plantaginaceae. 

 Gesneriaceas. 



Solanaceae. 

 Labiataj. 



— Myoporinae. 



— Hydrophyllaceae. 



— Gentianaceas. 

 Loganiaceae. 

 Apocynaceae. 



— Oleace.'B. 

 Santalaceaj. 



— Lauraceae. 

 Palmes. 

 Smilacina?. 

 Juncaceas. 



Of these, sixteen (marked thus — ) are represented by a single species, and the remaining 

 twenty-four families comprise 220 species or 9.16 species to each genus. The following 

 families are represented by five or more species : 



Those species belonging to families which are not represented by five or more species, are 

 but ninety-two, belonging to fifty-six families, less than two species to each family on an 

 average, while the families in the above list average 14 species each. 



Species peculiar to the Hawaiian Islands : 



Ranunculus hawaiiensis Gray. 



maviensis Gray. 

 Nephroica Ferrandiana Gray. 

 Lepidium oaliuense Cham. & Schlect. 



serra H. Mann. 

 Cleome sandwicensis Gray. 

 Viola kavaiensis Gray. 



maviensis II. Mann. 

 Chamissoniaua Ging. 

 Isodendrion pyrifolium Gray, 

 longifolium Gray. 

 laurifolium Gray. 

 Xylosma hawaiiensis Seem. 

 1'ittosporum confertiflorum Gray. 



MEMOIRS BOST. SOC. NAT. HIST. Vol. I, Pt 4. 



Pittosporurn cauliflorum H. Mann. 



terminalioides Planchon. 

 spathulatum II. Mann. 

 glabrum Hook. & Arn. 

 acuminatum II. Mann. 

 Silene struthioloides Gray. 



lanceolata Gray. 

 Schiedea Nuttallii Hook, 

 diflusa Gray. 

 amplexicaulia II. Mann. 

 stellarioides II. Mann. 

 Menziesii Hook. 

 Hookeri Gray, 

 ligustrina Cham. & Schlect. 



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