220 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN | VOL. 10 



This species differs from all the other known species of the genus in having 

 the corolla-lobes longer than the corolla-tube. 



10. Kotchubaea insignis Fisch. ex DC. Prodr. 4: 373. 1830; Arch. Jard. Bot. 

 Rio de Janeiro 4 : 186. pi. 24. 1925. 



Fatima ? laxiflora Bentli. Jour. Bot. 3: 220. 1841. 



Distribution. Lowland, non-inundated forest, at low elevations near sea-level, 

 Amazonian Brazil, French Guiana, and British Guiana. 



FRENCH GUIANA. Without locality or date, Leprieur (?) 397 (photo and 

 fragment of hoknype from B at F, photo at NY, staminate flowers) ; without 

 locality and date, ex herb. Copenhagen, 997 (F, staminate flower) ; without 

 locality and late, Leblond (F, sterile) ; without locality, 1845, Melinon (F, NY, 

 US, staminate flowers) ; Cayenne, without date, M. Martin (F, staminate flowers). 

 BRAZIL. Amazonas: Belem, Utinga; silva non inundabili; pistillate arbor 

 mediocris; floribus albidis demum lutescentibus, odoratis; 27 May 1943, Ducke 

 1247 (NY, US, pistillate flowers) ; Belem do Para, 9 Aug 1902, R. Sigucira 2838 

 (US, fruiting) ; Belem do Para, 29 May 1914, Ducke 15332 [US, 2 sheets pistillate 

 flower (US no. 1040636) and fruit (US no. 1040635)] ; Belem do Para, 29 May 

 1914, Ducke 15331 (F, US, staminate flowers) ; Belem do Para; silva humido ad 

 urbem ; arbor media ; floribus albidis demum lutescentibus, odoratis ; 18 May 1926, 

 Ducke 15540 (US, staminate flowers). Maranhao: Capoeirao, Turyassu; baum 

 10-20 m; krone griinlichgelb ; 16 Oct 1923, E. H. Snethlage 273 (F, pistillate 

 flowers) . 



The calyx together with the hypanthium in the pistillate flowers is more 

 elongated than in the other species of Kotchubaea and attains a combined length 

 up to 30 mm. In this species, likewise, the long peduncle of the pistillate flowers 

 serves to distinguish this species from other known taxa of the genus. In most 

 cases this peduncle in anthesis is 10-17 mm long, but in SnetMage 273 it attains 

 a length of 30 mm. Except for the Snethlage 273 specimen, in which 3 apparently 

 pistillate flowers terminate the flowering branch, all the other collections exam- 

 ined have a solitary terminal pistillate flower. The staminate and pistillate 

 corollas are exceptional in the genus in having the outside surface of the corolla- 

 tube glabrous throughout. 



Maguireothamnus Steyermark, gen. nov. 



FruUces non glutinosi, parce ramosi. Stipulae interpetiolares in vaginam 

 connatae in acumen triangulari-subulatum prominens persistens contractae. Folia 

 opposita ad apicem ramorum subconferta coriacea, subtus nervis lateralibus 

 venulisque obsoletis. Flores speciosi magni in axillis supremis solitariis breviter 

 pedicellati vel sessiles, bibracteati. Bracteae conspicuae foliosae. Calycis lobi 

 aequales vel inaequales. Corolla speciosissima magna plerumque alba hypo- 

 crateriformis 5-6-lobata, tubo longissimo intus parte suprema tomentosa vel 

 villosula aliter glabro, lobis contortis. Stamina 5 inclusa, antheris in parte 

 suprema corollae insertis. Stylus saepe exsertus, parte suprema dense papilla hi. 

 Ovarium biloculare. Ovuli plures. Capsula ab apice loculicidaliter dehiscens. 

 Semina subalata subcompressa irregulariter subrhomboidea angulata testa 

 foveolata. 



Type species: Maguireothamnus speciosus (N. E. Brown) Steyermark. 



This new genus is named in honor of Bassett Maguire, Head Curator, The 



