1960] 



SPATHIPHYLLUM 



49 



obtuse rather than acute, and the stipe of the spadix is much longer than that 

 of S. lanceae folium.™ 



36. S. phryniifolium Schott, Oesterr. Bot. YVoehenbl. 7: 159. 1857. Figure 7. 

 Spathiphyllum zetelcianurn Standi. Ann. Missouri Bot. Gard. 27: 267. 1940. 



Leaf-blade oblique, typically lanceolate, 2.5-4 times as long as wide, varying 

 to oblong-elliptie, 25-50 (-67) cm long and (5-) 8-16 (-20) cm wide, the apex 

 acuminate-cuspidate, the base obtuse to subtruneate, the primary lateral veins 

 many, arising at an angle of ea. 60° ; petiole subequaling the blade, conspicuously 

 alate nearly or quite to the geniculum ; geniculum 1-3 cm long. Peduncle 1.5 

 times to twice as long as the blade, 35-65 (-103) cm long; spathe cucullate, 

 typically lanceolate, varying to oblong-elliptie, 10-26 (-33) cm long and 3-9 (-11) 

 cm wide, the apex attenuate, the base oblique, subtruneate to cuneate and 

 decurrent on the peduncle 2-4.5(-7) cm; spadix 2.5-8(-11.5) cm long, on a 

 stipe 0.4— 1.3(-2) em long; perianth of separate segments; pistil elongate-conic, 

 the exserted portion shorter than the perianth; ovary (2-)3-locular, the ovules 

 affixed near the base of the locules, 2-1 in each of the 3 locules, totaling 6-3 (-2) 

 ovules per ovary; fruiting spadix rough; fruit obovoid, rostellate; seeds as 

 many as the ovules, oblique-ovoid or reniform to oblong in profile, the surface 

 smooth or somewhat foveolate. 



Type collection: A. Fendler (25, "Chagres, Isthmus of Panama," mouth 

 of the Rio Chagres, Canal Zone, Panama, .Ian 1850 (holotype K). Unicate, 

 presumably. 



Distribution : Widespread in Panama including the Perlas Archipelago, ex- 

 tending northward to Chiriqui Lagoon on the Caribbean coast and reaching the 

 western Costa Rican province of Guanacaste. 



COSTA RICA: Guanacaste: La Tejona, n of Tilaran, Standley # Valeria 46032 (US). 



PANAMA: Bocas del Toro: Water Valley, Sep 1940, von Wedel 933 (F) ; Old Bank 

 Island, vie, of Chiriqui Lagoon, Feb 1941, von Wedel Ji>68 (MO); Shiphead Island, vie. of 

 Chiriqui Lagoon, Sep 1941, von Wedel 2688 (F, MO), 2690 (MO). CANAL ZONE: Agua Clara 

 Reservoir, Sep 1924, Stevens 556 (US) ; Barro Colorado Island: Jun 1931, Bailey <$• Bailey 122 

 (BH), 209 (BH); Snyder-Molino Trail, Jul 1931, Starry 4 (F) ; Zetek Trail, Jul 1931, 

 Starry 27 (F) (type collection of S. zetelcianurn Standi.); Aug 1940, Woodson 4' Sehery 968 

 (MO); back of second cone e of Pena Blanca, Feb 1932, Woodicorth <$• Vestal 681 (F). 

 Chiriqui: El Boquete, Mar 1918, Killip 3639 (US). Code: n rim of El Valle, June 1939, 

 Alston 4' Allen 1850 (MO). Darien: Cana-Causi Trail, Chepigana Dist., Mar 1940, Terry $ 

 'terry 1525 (F). Panama: Cerro Campana, Dec 1939, Allen 2090 (MO) ; Cerro Campana, trail 

 from Campana to Chica, Aug 1941, Allen 2655 (F). PERLAS ARCH. : "Perl-oarae," 1852, 

 Andersson s.n. (S). San Jose Island: coastal bluffs at Naval Station, Jun 1945, Erlanson 353 

 (GH, US); Camp Valley, Oct 1944, Johnston 265 (GH) ; center of Area 11D (trail from 

 Loop), Jan 1946, Johnston 1164 (GH) ; north of Navy Station, at pump, Jan 1946, Johnston 

 1264 (GH). Veraguas: trail between Canazas and foot of Cordillera Central, headwaters of 

 Rio Canazas, Feb 1937, Allen 203 (MO, UC). 



S. phryniifolium is restricted to Costa Rica and Panama, but various authors 

 have included it in the floras of countries from Mexico to Peru ! It is often 

 confused with S. friedrichsthalii, which occurs in the same region as S. phrynii- 

 folium. The most positive difference between these two species is the number 

 of ovules per locule — two or one in S. phryniifolium, and commonly 8-5 in the 

 other. S. friedrichsthalii is further differentiated by its very stout, densely 

 flowered spadix and the long-exserted styles. 



15 According to the original description and illustration of S. lanceaefoUum by Jacquin. 



