438 MUSSAENDA 



is large, leafy, and brightly coloured, and helps to make the fl. con- 

 spicuous (cf. Euphorbia, Salvia). 



Mussaendopsis Baill. Rubiaceae (i. 5). i Malaya. 



Mussatia Bur. (Bignonia p.p.). Bignoniaceae (i). i Guiana. 



MusscMa Dum. Campanulaceae (i. i). 2 Madeira. The capsule opens 

 by many transv. slits between the ribs. Cult. orn. fl. 



Mustard, Brassica nigra Koch, Sinapis; hedge-, Sisymbrium offici- 

 wa/^Scop.; treacle-, Ery simian cheiranthoid<:s L. ; -\xtt,Salvadora 

 persica L. 



Mutabilis (Lat), changeable (in colour, &c.). 



Mutant, form arising by mutation; cf. de Vries, Mutation Theory. 



Muticous, blunt. 



Mutisia L. f. Compositae (12). 55 S. Am. Many climbers (a rare 

 habit in C.) with ends of leaf-midribs prolonged into tendrils. All 

 are shrubby with large heads of fls. Shows well chars, of 12. 



Mutumocarpon Pohl. Inc. sed. Nomen. 



Myagrum (Tourn.) L. Cruciferae (2). i Medit., mid-Eur. 



Myall (Austr.), Acacia homalophylla A. Cunn. 



Myanthus Lindl. = Catasetum Rich. (Orchid.). 



Mycelium, Rafflesiaceae. 



Mycetia Reinw. (Adenosacme Bff.). Rubiaceae (1.7). 5 Indomal. 



MycorMza, a fungus whose hyphae replace root-hairs in absorption (cf. 

 Saprophytes), Botrychium, Epipogiim, Neotfia, Orchidaceae. 



Myginda Jacq. Celastraceae. 15 trop. Am., W.I. 



Myodocarpus Brongn. et Gris. Araliaceae (2). 12 New Caledonia. 



Myonima Comm. ex Juss. Rubiaceae (n. 4). 5 Mauritius, Bourbon. 



Myopordon Boiss. Compositae (n). 2 Persia. 



Myoporaceae (EP., Bff.). Dicots. (Sympet. Tubiflorae; Lamiales 

 Bff.}. 5 gen., 100 sp. chiefly Austr. and neighbouring Is. (i in 

 each of following: Sandvv. Is., E. As., Mauritius, Afr., W.I.). 

 Most are trees or shrubs, with alt. or opp. entire exstip. 1. , often 

 covered with woolly or glandular hairs, frequently very reduced in 

 size. Fls. sol., or in cymose groups, axillary, 5, reg., or -|- . K(s), 

 C (5), A4, didynamous; anther loculi confluent; G (2), 2-loc. or by 

 segmentation 3 io-loc., in the former case with i 8, in the latter 

 with i, pend. anatr. ovule in each loc. Drupe. Endosperm. Chief 

 genera: Pholidia, Myoporum. 



Myoporineae (BH.) = Myoporaceae. 



Myoporum Banks et Soland. Myoporaceae. 25 Austr., E. As., Sandw. 

 Is., Mauritius. M. laetnin Forst. f. (N.Z.) yields useful timber. 



Myoschilos Ruiz et Pav. Santalaceae. i Chili. 



Myoseris Link = Pterotheca Cass. (Comp.). 



Myosotidium Hook. Boraginaceae (iv. i). i sp. Chatham Is. 



Myosotis L. Boraginaceae (iv. 4). 35 sp. |^ temp. 8 in Brit, 

 (scorpion-grass, forget-me-not). The corolla-mouth is nearly closed 

 by scales, and in some there is a coloured ring at the entrance form- 

 ing a honey guide (see Life of Sprengel, in Nat. Science, Apr. 1893). 

 The colour of the C changes as it grows older (see fam.). 



Myosurandra Baill. Hamamelidaceae. i Madagascar. 



Myosurus L. Ranunculaceae (3). 7 temp. M. minimus L. (mouse- 

 tail) in Brit. Recept. much elongated. 



