138 CHAYDAIA 



Chaydaia Pilarch. Rhamnaceae. i Tonquin. 



Chayote, Sechinm edulc Su . 



Chayotilla, Hanburia. 



Caay-root, Oldenlandia umbellnta L. 



Cheatgrass (Am.), Browns. 



Checker-berry (Am.), Gaultheria procumbens L. 



Cheilanthes Sw. Polypodiaceae. 120 trop. and temp, mostly xero. ; 

 pinnae often incurved and stomata protected by hairs (rf. Empetrutn). 



Cheilanthos St. Lag. Labiatae (inc. sed.). Nomen. 



Cheiloclinium Miers (Salafia p.p. EP.}. Hippocrat. i Brazil. 



Cheilosa Blume. Euphorbiaceae (A. n. 6). i W. Java. 



Cheilotheca Hook. f. Pyrolaceae. i E. Indomal. 



Cheiradenia Lindl. Orchidaceae (n. /3. n). i Guiana. 



Cheiranthera Brongn. Pittosporaceae. 4 Austr. 



Cheiranthus L. Cruciferae (4). 20 Medit. and N. temp. C. Cheiri'L. 

 (wall-flower) Brit. Cult. orn. perf. fl. 



Cheirodendron Nutt. (Panax L. BH.). Araliac. (r). 2 Hawaii. 



Cheirolaena Benth. Sterculiaceae. i Mauritius. 



Cneiropleuria Presl. Polypodiaceae. i E. As. 



Cheiropterocephalus Barb. Rodr. (Microstylis EP.). Orchidaceae (II. 4). 

 i Brazil. 



Cheirostemon Humb. et Bonpl. (Chiranthodendron Cerv. ). Stercu- 

 liaceae. i Mexico. Fls. large; petals o; sta. 5, united below. 



Cheirostylis Blume. Orchidaceae (n. 2). 12 trop. Afr. and As. 



Chelidoniuin L. Papaveraceae (n). i Brit, to E. As., C. ma/us L., 

 the greater celandine. 



Chelidurus Willd. Inc. sed. i, habitat? 



Chelonanthus Gilg (Lisianthus L.). Gentian, (i). 10 trop. S. Am. 



Chelone L. Scrophulariaceae (n. 4). 4 N. Am. 



Chelonecarya Pierre. Menispermaceae. i Gaboon. 



Chelonespermum Hemsl. Sapotaceae. 4 Solomon Is., Fiji. 



Chelonistele Pfitzer (Coelogyne, &c. p.p.). Orchid, (n. 3). 5 Indomal. 



Chelonopsis Miq. Labiatae (vi). 2 Japan, China. 



Chemotropism. sensitiveness to chemical stimulus. 



Cliena. burning of forest for a couple of crops. 



Chenolea Thunb. (BH. inch Bassia All.). Chenopodiaceae (A). 

 3 Medit., S. Afr. 



Chenopodiaceae (EP.; BH. incl. Basdlaceae). Dicots. (Archichl. 

 Centrospermae ; Curvembryae BH.). 75 gen., 500 sp. with an 

 interesting geographical distr., determined by the fact that they are 

 nearly all halophytic. The 10 chief districts char, by their presence 

 are (according to Bunge), (i) Austr., (2) the Pampas, (3) the Prairies, 

 (4) and (5) the Medit. coasts, (6) the Karroo (S. Afr.), (7) the Red 

 Sea shores, (8) the S.W. Caspian coast, (9) Centr. As. (Caspian to 

 Himalayas deserts), (10) the salt steppes of E As. The presence 

 of large quantities of salt in the soil necessitates the reduction of the 

 transpiration, so that the pi. which grow in such situations exhibit 

 xero. characters. They are mostly herbs (a few shrubs or small 

 trees), with roots which penetrate deeply into the soil, and with 1. 

 of various types, usu. not large, often fleshy, and often covered with 

 hairs, which frequently give n curious and very char, mealy feeling 



