PERITOMA 499 



The petals are usu. of some other colour than green, and of delicate 

 texture. They may be narrowed at the base, as in wallflower, into a 

 claw (unguiculate), fringed with hair-like teeth, as in pinks (fimbriate), 

 bi-Jid, tri-fid, &c. (cf. 1.), or divided into several long segments 

 (laciniate) ; they may be spurred (with long hollow projection, as in 

 Viola), saccate or gibbous (with projecting broad pouch), scaphoid 

 (boat-shaped, as in Loasa), &c. The general form of the sympetalous 

 corolla may be tubular, funnel-shaped, urceolate (urn-shaped), cam- 

 pamdate (bell-shaped as in Canterbury bells), rotate (wheel-shaped 

 with little or no tube, as in Veronica), salver-shaped (ditto, but with 

 long tubular portion, as in primrose), spurred, saccate, gibbous, ven- 

 tricose (swollen out all round in the basal part); if irreg., it may be 

 labiate or bilabiate (with two projecting lips, as in Labiatae), personate 

 (labiate, mouth closed by projecting lobe, as in Antirrhinum, &c.), 

 helmet-shaped, ligulate (strap-shaped, as in dandelion, &c.), &c. 



The shape, texture, &c. of the individual sepals, petals, calyx-lobes, 

 corolla-lobes, are described as if they were leaves. 



Perianthomega Bur. (Bignonia p.p.)- Bignon. (i). i C. Brazil. 



Perianthostelma Baill. Asclepiadaceae (n. i). 3 trop. Afr. 



Peritalema DC. (Boutonia DC. EP.}. Acanthaceae (iv. A), i Madag. 



Periblepharis Van Tiegh. (Luxenibtirgia p.p.). Ochn. i Brazil. 



Pericampylus Miers. Menispermaceae. 6 E. Indomal. 



Perichasma Miers (Stephania p.p. BH.}. Menispermaceae. i trop. 

 W. Afr. 



Perichlaena Baill. Bignoniaceae (2). i Madag. 



Periclymenum Tourn. ex Rupp. = Lonicera L. p.p. (Caprifol.). 



Pericome A. Gray. Compositae (6). 2 S. U.S., Mexico. 



Pericopsis Thw. Leguminosae (in. i). i Ceylon, yielding a pretty 

 cabinet wood (nedun). 



Perictenia Miers (Odontadenia p.p. EP.). Apocyn. (n. i). i Peru. 



Peridiscus Benth. Flacourtiaceae (inc. sed.). i Braz., Venezuela. 



Periestes Baill. Acanthaceae (iv. B). 2 Madagascar, Comoros. 



Perilla Linn. Labiatae (vi). 3 India to Japan. 



Perillula Maxim. Labiatae (vi). i Japan. 



Perilomia II. B. et K. Labiatae (vi). 8 Chili to Mexico. 



Perinerion Baill. (Baissea A. DC. p.p.). Apocyn. (n. i). i Angola. 



Periodicity, usu. correlated with periodicity in climate, e.g. winter and 

 summer, wet and dry, or hot and cool seasons. And cf. Agave, 

 Fag us, &.c. 



Periornphale Baill. Gesneriaceae (inc. sed.). 2 New Caledonia. 



Peripeplus Pierre. Rubiaceae (n. 5). i Gaboon. 



Periphragmos Ruiz et Pav. (Cantua Juss.). Polemon. 2 Andes. 



Periploca Tourn. ex L. Asclepiadaceae (i). 12 temp. \3fc, trop. Afr. 



Peripterygia Loes. (Pterocelastrus^.^.). Celastr. i New Caled. 



Peristeria Hook. Orchidaceae (n. 13). 5 C. Am., incl. P. elata Hook, 

 (dove orchid). Cult. orn. fl. 



Peristethium Van Tiegh. (Loranthus p.p.). Loranth. (i). i Andes. 



Peristrophe Nees. Acanthaceae (iv. B). 15 palaeotrop. 



VetiatylasElume(ffa6enariap.p.). Orchidaceae (ii. t). 80 warm |^. 



Perithrix Pierre (/{alcsanthiis EP.). Asclepiad. (i). t Cameroons. 



Peritoma DC. = Cleome L. (Cappar.). 



322 



