Dec. i8g6. Flora or Yucatan — Mii.lspaugh. 303 



Croton albidus Miill. Ycaban. 



Shrubby, 1.5 to 2 feet high; along the railroad at Tecantun, 

 Jan. 1895 {Millspaiigli, Armour Expcd. 61, i8g). Shrubby, 3 feet 

 high; abundant in the brush lands about Izamal (303). 



Croton arboreus sp. nov. (Plate XV.) 



§ Elcutcria. A large tree. Branchlets lepidote; stipules thick 

 columnar; leaves palmately 5-veined, ovate-acuminate, deltoid 

 or acute at the base, 4 to 6 inches long, 3 to 5 inches broad, 

 petioles half the length of the blade which is bicolor, sparingly 

 lepidote above, densely but not contiguously lepidote beneath 

 with two sorts of lepida, the one rusty-brown greatly scattered, 

 the other silvery with a rusty center. Young leaves ovate-cordate 

 densely silvery-lepidote. Racemes axillary and terminal, mostly 

 simple, about twice the length of the petiole ; densely large 

 flowered, with the usually single female flower separate at the 

 base. Male flowers densely crowded, sessile; calyx of 5 ovate, 

 pointed, rusty-lepidote sepals, petals ovate-spatulate hair}- on the 

 margin; stamens, 10 fertile, i sterile. Female flowers short 

 pedicelled ; calyx of 5 ovate, pointed, rusty-lepidote segments; 

 petals ligulate, blunt; ovary globular, thickly matted with a felt 

 half the diameter of the ovary, composed of lepidote-stellate 

 hairs; style peltate, sessile, investing the upper half of the ovary, 

 4-partite, the segments 3-cleft, and these 3-fid, revolute. Cap- 

 sules globular, slightly 3-sulcate; semen ignoti. 



Tree 60 feet high, in the forests about Izamal (449)- Near 

 C. fiivet/s J acq. 



Croton Cortezianus Kunth. Xa-balam. 



Bushy, 3 to 5 feet high. Along the railroad at Bocoba, Jan. 

 1895 {Millspaiigh, Armour Exped., igi). Common near Merida 

 {Valdez, 77). 



Croton flavens Linn. 



In open woodlands north of Mascab fixoy, Jan. 1895 (J////s- 

 paugh, Armour Exped. i^g)- 



Croton fragilis H. B. K. Taanche. 



Shrub 15 feet high, very abundant in the brush lands about 

 Izamal (68g). 



Croton humilis Linn. Ycaban. 



Herbaceous, 18 inches high. Open grounds and scrub lands 



about the Monjas, Chichen Itza, Jan. 1885 i^MillspaugJi, Armour 



Exped. 102). Common in the scrub lands near Merida ( Valdez, 20). 



Croton lobatus Linn. 



Herb i to 4 feet high. Common in old fields about Izamal, 

 July to Aug. (760). 



Croton rhamniaefolius salviaefolius Miill. Ecbalam. 



Shrubby, 5 feet high. Abundant in open fields about Izamal, 

 Jan. to Dec. (407). 



