OPINION

Appellant, a state prisoner, appeals from an order of the district court denying his petition for habeas corpus. We reverse.

On February 1, 1973, appellant was charged with two counts of robbery in an information filed in the Superior Court of Alameda County, California. The information also alleged that appellant had been convicted of three prior felonies. The purpose of the latter allegation was to bring into play California Penal Code § 644, which provides that a person convicted of a felony who has been convicted of three prior felonies shall be adjudged a habitual criminal and imprisoned for life.

Initially, appellant pleaded not guilty to the robbery charges and stood mute as to the charge of prior felony convictions. He was rearraigned on April 2, 1973, and admitted the prior convictions. Subsequently, he was sentenced to state prison as a habitual criminal on the basis of a jury verdict of guilty on the robbery charges and his admission of the prior convictions.

After exhausting state remedies, appellant filed his petition for a writ of habeas corpus in the district court, claiming that his adjudication and sentence as a habitual criminal were constitutionally defective because he had not been admonished on the record of the consequences of his admission of the prior felony convictions.

On June 19, 1972, we held in Wright v. Craven, 461 F.2d 1109 (9th Cir. 1972), that an admission of prior convictions alleged to obtain an adjudication and sentencing under California Penal Code § 644 was the “functional equivalent” of a plea of guilty to a separate charge, and that under the principles announced in Boykin v. Alabama, 395 U.S. 238 , 89 S.Ct. 1709 , 23 L.Ed.2d 274 (1969), such an admission may not be accepted unless the record reflects that it was made with a full understanding of its consequences. In Bernath v. Craven, 506 F.2d 1244 (9th Cir. 1974), we held that the decision in Wright v. Craven was to be applied prospectively only; that is, only to admissions of prior felony convictions that were made after the date Wright v. Craven was filed. Appellant’s admission, as we have said, was made April 2, 1973, nine months after Wright v. Craven.

Almost a year after appellant’s admissions, on March 7, 1974, the Supreme Court of California in In re Yurko, 10 Cal.3d 857 , 112 Cal.Rptr. 513 , 519 P.2d 561 (1974), adopted the rule this court had announced in Wright v. Craven. The California Supreme Court further held that its decision was to be applied only to admissions received after the date of the filing of In re Yurko.

In rejecting appellant’s petition for ha-beas corpus in this case, the district court reasoned that Wright v. Craven rested upon the premise that an admission of prior convictions was the equivalent of a guilty plea; that the existence of this equivalence was a question of state law; that the Supreme Court of California is “clearly the final expositor of state law”; and that the Supreme Court of California “found that equation to exist after March 7, 1974.” Because appellant’s admission was received prior to March 7, 1974, the district court concluded that it was not equivalent to a guilty plea under state law, and, therefore, that appellant need not have been informed on the record of the consequences of his admission.

The equivalence referred to in Wright v. Craven was explained in Bernath v. Craven :

506 F.2d at 1245 .

Thus, the decision in Wright v. Craven does not rest upon the characterization the state attaches to an admission of prior felonies; it rests rather upon the consequences such an admission has under state law. The Attorney General of California recognizes that an admission of prior felony convictions has the consequences attributed to it in Wright v. Craven ; the Supreme Court of California recognized the accuracy of this description in In re Yurko. The rule that follows under the United States Constitution because of these consequences is a rule of federal law.

The Attorney General of California argues, however, that California courts are not required to accept the decision in Wright v. Craven. The Attorney General points out that California courts have long held that “although we are bound by the decisions of the United States Supreme Court interpreting the federal Constitution, we are not bound by the decisions of the lower federal courts even on federal questions.” People v. Bradley, 1 Cal.3d 80, 86 , 81 Cal.Rptr. 457, 460 , 460 P.2d 129, 132 (1969) (citations omitted). The Attorney General argues that to grant appellant’s petition would force Ninth Circuit decisional law upon a tribunal not subject to its appellate jurisdiction and thereby violate principles underlying our federalism.

The jurisdiction of federal district courts to issue writs of habeas corpus on petition of state prisoners is origi nal, not appellate (Fay v. Noia, 372 U.S. 391, 407, 409 , 83 S.Ct. 822 , 9 L.Ed.2d 837 (1963)), though our jurisdiction over the decisions of the district courts in such cases is appellate. 28 U.S.C. § 2253 . California’s failure to be persuaded by Wright v. Craven does not discharge federal district courts from their responsibility to determine and apply federal constitutional law in proceedings properly before them under the federal habeas corpus statute. Townsend v. Sain, 372 U.S. 293, 318 , 83 S.Ct. 745 , 9 L.Ed.2d 770 (1963); Brown v. Allen, 344 U.S. 443, 459 , 73 S.Ct. 397 , 97 L.Ed. 469 (1953); id. at 506-08 , 73 S.Ct. 397 (Frankfurter, J., concurring). Nor does it discharge us from our duty to determine and apply federal law in the exercise of our appellate jurisdiction over federal district courts.

As Justice Frankfurter said in his concurring opinion in Brown v. Allen, supra, 344 U.S. at 510 , 73 S.Ct. at 448 .

United States ex rel. Lawrence v. Woods, 432 F.2d 1072 (7th Cir. 1970), relied upon by the Attorney General of California, is not in point. The court there decided that a state court need not follow an inferior federal court decision on a question of federal constitutional law in a subsequent case arising in the state court. Distinguishing the question before us, the court said, “Of course in a given factual setting when a lower federal court has jurisdiction over the subject matter and the parties, its adjudication is the law of the case and its judgment is binding on all other courts, subject only to the appellate process.” Id. at 1076 .

The state urges us, in the interest of comity, to conform the effective date of the rule announced in Wright v. Craven to that fixed by the Supreme Court of California for the rule announced in In re Yurko. While under certain circumstances such deference might well be appropriate, federal courts have no discretion to decline to apply a federal constitutional rule to a case such as this in which the operative facts occurred after the rule was announced.

Reversed and remanded.