502 ACANTHACEA. 
3. Hygrophila longifolia, Nees in DC. Prodr. xi. p. 86. 
Sour Mexico, Vera Cruz to Orizaba (Miller, 948), Consoquitla, Vera Cruz (Linden, 
126).—Brazit. Hb. Kew. 
4. Hygrophila rivularis, Nees in DC. Prodr. xi. p. 87. 
Ruellia rivularis, Schl. in Linnea, vii. p. 396. | 
South Mexico, Cuesta Grande de Chiconquiaco (Schiede & Deppe).—CoLoMBIa. 
Hb. Kew. 
5. CALOPHANES. 
Calophanes, D. Don in Sweet’s Brit. Fl. Gard. ser. 2, t.181; Benth. et Hook. Gen. Plant. i. 
p. 1077. 
Herbs or half-shrubs. About thirty species, inhabiting Tropical and North America, 
Tropical and South Africa, and Tropical Asia. Several of the following may have to 
be reduced. 
1. Calophanes angustifolia, Hemsley, n. sp. 
C. ovate affinis, differt foliis subsessilibus lineari-lanceolatis, floribus majoribus etc. 
Frutex vel herba lignescens, stricta, plus minusve villoso-hirsuta, ramis obscure tetragonis rectis. 
Folia rigidiuscula, scabrida, subsessilia, lineari-lanceolata, 13-24 poll. longa, 3-5 lineas lata, 
integra, subacuta, discoloria, venis utrinque 4 vel 5 conspicuis apicem versus excurrentibus. 
Flores axillares, subsessiles, pauci, aggregati, dense cymosi, cymis bracteatis brevissime 
pedunculatis ; bracteze anguste, calycem wquantes; calyx scabridus, lobis longe setaceo- 
subulatis tubum corolle fere equantibus ; corolla distincte bilabiata, puberula, circiter 1 poll. 
longa, tubo latiusculo incurvo, limbi lobis rotundatis; antherarum loculi basi breviter mucro- 
nati; ovarium glabrum, loculis 2-ovulatis. Capsulam maturam non vidi. | 
South Mexico, Oaxaca (Ghiesbreght). Hb. Kew. 
2. Calophanes bilabiatus, Seem. in Bot. Voy. ‘Herald, p. 324, t. 65. 
NortH Mexico, Cerro de Pinal (Seemann, 1513); Sovurn Mexico, Cuernavaca 
(Lourgeau, 1262). Hb. Kew. 
3. Calophanes capitatus, CErst. in Vidensk. Meddel. 1854, p.131; Walp. Ann. 
v. p. 647. 
SourH Mexico, Oaxaca (Liebmann). 
4. Calophanes decumbens, A. Gr. Synop. Fl. N. Am. ii. p. 325. 
Calophanes oblongifolia, Torr. Bot. U.S. & Mex. Bound. Surv. p. 122, non Don. 
Texas to Arizona.—Nortu Mexico, Sonora (Wright, Thurber), Sierra Madre (Palmer, 
2033), region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 699), Bolafios 
(Coulter, 1178), near San Luis Potosi (Schaffner). Hb. Kew. 
5. Calophanes hirsutissima, Nees in DC. Prodr. xi. p. 109. 
SoutH Mexico, Hacienda de Guadalupe (Ehrenberg). 
