NOMENCLATURE 451 



Nilgiri nettle, Girardinia heterophylla Decne. 



Nim, neem, Azaciirachta indica A. Juss. (Afelia Azadirachta L.). 



Nimble Will (Am.), Rhiehlenbergia diffusa Schreb. 



Niopo tree (W. I.), Piptadenia. 



Nipa Thunb. Palmae ( vi). i palaeotrop., N.fritticans Thunb., a low- 

 growing palm with monoec. infl. Fr. woody, combined into a dense 

 head ; each contains one seed. It grows in brackish water and is 

 very char, upon trop. coasts. [See Phytelephas.] 



Niphaea Lindl. Gesneriaceae (n). 2 Guatemala, Cuba. 



Niphobolus Kaulf. =Cyclophorus Desv. (Polypod.). 



Nipplewort, Lapsana communis L. 



Nirarathamnos Balf. f. Umhelliferae (in. 5). i Socotra. 



Nirwamia Rafin. Euphorbiaceae (inc. sed.). i Japan. 



Nisa Noronha= Homalium Jacq. p.p. (Flac.). 



Nissolia Jacq. Leguminosae (in. 7). 7 trop. and subtrop. Am. 



Nitidus (Lat.), lustrous, smooth and shining. 



Nitraria L. Zygophyllaceae. 3 palaeotrop. 



Nitrophila S. Wals. Chenopodiaceae (A), i W. N. Am. 



Nivalis (Lat.), growing near snow; niveus (Lat.), snow-white. 



Nivenia R. Br. (Paranomns p.p. EP.). Proteaceae (i). 12 S. Afr. 



Nivenia Vent. (Aris.'ea BH.}. Iridaceae (n). 2 S. Afr. Cult. orn. fl. 



Noaea Moq. in DC. Chenopodiaceae (B). 7 W. As. 



Noccaea Moench (Htttchinsia p.p. EP.). Cruciferae (4). 2 Alps. 



Node, the joint where a leaf springs from the stem. 



Nodocarpaea A. Gray. Rubiaceae (n. 10). i Cuba. 



No-eye pea (W.I.), Cajanus indicus Spreng. 



Noisettia H. B. et K. Violaceae. i Brazil, Peru, Guiana. 



Nolana L. Nolanaceae. 20 Chili, Peru. Many are shore plants with 

 fleshy 1. 



Nolanaceae (EP. Convolvulaceae p.p. BH.). Dicots. (Sympet. Tubi- 

 florae). 3 gen., 30 sp. , W. coast of S. Am. Herbs or low shrubs 

 with simple L, often covered with glandular hairs. The 1. in the veg. 

 region, are alt., but in the infl. portion they become paired in the 

 same way as in Solanaceae (q.v. ) Many are sea-shore plants with 

 fleshy 1. Fls. sol. in the leaf-axils, 5 , reg. K (5); C (5); A 5, alt. 

 with petals ; G typically 5, only united in Alona, usu. free and divided 

 by irreg. longitudinal constrictions into 5 or 10 portions standing in a 

 row, or by longitudinal and transv. constrictions into 10 30 portions 

 in 2 or 3 rows. The fr. consists of a corresponding number of r 7- 

 seeded nutlets. Stipe i. Seed album. Genera: Nolana, Alona, 

 Dolia. 



Nolina Michx. Liliaceae (vi). 10 S.W. N. Am. Xero. Cult. 



Nolletia Cass. Compositae (3). 4 Morocco, S. Afr. 



Noltea Reichb. Rhamnaceae. i S. Afr. Cult. orn. shrub. 



Nomaphila Blume (Hygrophila p.p. EP.). Acanth. (iv. A). 8 palaeo- 

 trop. 



Nomenclature (with esp. reference to classification). The unit in classifi- 

 cation is the species, which was described by A. L. de Jussieu as "the 

 perennial succession of similar individuals perpetuated by generation." 

 All marsh marigolds (Caltha palustris) form one sp., or all pi. of 

 Indian corn (Zea Mays) or coconut (Cocos mid/era). But exactly to 



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