175] Malvaceae. ]\rarcgraviacf'ae. Martyniaceae. Melastomataceae. 185 



Pcltaea (Presl) .Standl. gen. nov. in Contr. U. S. Nat. Herb. Washington 

 XVin (1916) p. 113 (= Malachra seet. Peltaea Presl = Pavonia sect. 

 Peltaea Gurke). Type species: Pavonia sessiliflora H. R. K. 



P. ovata (Presl) Standl. 1. c. p. 113. - Panama (Pendler ii. 21). 



P. Riedeln (Gurke) Standl. 1. c. p. ll.T (= Pavonia Riedelii Gurke). - Matto 

 Grosso, Brazil. 



P. sessiliflora (H. B. K.) Standl. 1. e. p. 113 {= Pavonia sessiliflora H. ?>. K. 

 = P. bracteosa Bentli. = Malachra tri nervi sTresl). — Trinidad. Panama 

 to Colombia and Brazil. 



P. speciosa (H. B. K.) Standl. 1. c. p. 113 (= Pavonia speciosaU. 1>. K.). — 

 Colombia and Venezuela to Brazil and in the West In dies. 



Senra nubica Webb. var. Scassellatii Mattei in Publ. R. Istit. stud. sup. prat. 

 e Perfezionam. Firenze I (1916) Append. p. 203. — Somalia italiana 

 meridionale (Scassellati e Mazzoelii n. 132). 



Siäalcea Cusickii Piper in Proceed. Biol. See. Washington XXIX (1916) 

 p. 99. - Oregon (Cusick n. 4147. 4205 a. 4086. 4200, Applegate n. 2386). 



Wercklea Pitt, et Standl. gen. nov. in Contr. V. S. Nat. Herb. Washington 

 XVIII. (1916) p. 112. 



Wercklea is a member of the subfamily Hibisceae. and is most 

 closely related to the genus Hibiscus. Several important points of 

 difference, however. niake it iinwise to refer it to that genus. The 

 involucre is merely 3-lobed before anthesis, while in all species of 

 Hibiscus the bracts are sej^arate. Paritium, sometimes referred to 

 Hibiscus, lias united braets, but they are 5 instead of 3. The winged 

 capsule, oblong anthers, and comparativly, few stamens are otlier 

 distingiiishing f eatures, but the best, perhaps, is the fact that the ovules 

 are amphitropons rather than anatopous. The genug is named for 

 Mr. C. Wer ekle, the collector of the type. who has botanized exten- 

 sively in little known regions of Central America and Colombia. 



W. insignis Pitt, et Standl. 1. c. p. 112. - Costa Rica (Werckle Nat. Herb, 

 n. 678 449, Tonduz n. 12 536). 



Marcgraviaceae. 



Marcgravia tobagensis Urb. in Fedde, Rep. XIV (1916) p. 335. — Tobago 

 (Broadway n. 4602). 



» Martyniaceae. 



Melastomataceae. 



Acisanthera simplex Brandeg. in Univ. Calif. Publ. Bot. VI (1914) p. 57. — 



Mexiko (Purpus n. 6804). 

 Asironia sorsogonensis Merr. in Philipp. 'Journ. Sei. XI (1916) p. 26. — Luzon 



(Ramos in Bur. Sei. n. 23 699. 23430). 

 A. badia Merr. 1 c. p. 26. — Luzon (Ramos in Bur. Sei. n. 23 646). 

 Beccarianthus Ickisii Merr. var. setosus Merr. in Philipp. Journ. Sei. Bot. 



X (1915) p. 278. - Leyte (Wenzel n. 1015). 

 Blakea Purpusii Brandeg. in Univ. Calif. Publ. Bot. VI (1914) p. 58. - Mexiko 



(Purpus n. 6786). 

 Clidemia vincentina Urban in P^edde, Rep. XIV (1916) p. 339 ( = C. domingensis 



Cogn. p.p.). - St. Vincent (Eggers n. 6870, Smith n. 114). 

 Conostegia Purpusii Brandeg. in Univ. Calif. Publ. I'.ot. VI (1914) p. 57. — 



Mexiko (Purpus n. 678-1). 



